Installation Instructions for: 2017+ LT4 CADILLAC …...SUPERCHARGER SYSTEM Step-by-step instructions for installing the HeartBeatHeartBeat of supercharger systems. Magnuson Superchargers

Installation Instructions for: 2017+ LT4 CADILLAC CTS-V SUPERCHARGER SYSTEM

Step-by-step instructions for installing the HeartBeatHeartBeat of supercharger systems.

Magnuson Superchargers1990 Knoll Drive, Bldg A, Ventura, CA 93003

(805) 642-8833magnusonsuperchargers.com

89-89-60-059 Rev B

* PREMIUM GASOLINE FUEL REQUIRED ** PREMIUM GASOLINE FUEL REQUIRED *

ATTENTION!Your MAGNUSON SUPERCHARGER kit

is sensitive to corrosion! Use only the vehicle manufacturer recommended coolant for your engine in

the intercooler system as well.

INSTALLATION MANUALMagnuson Supercharger Kit GM 6.2 Liter EngineCadillac CTS-V 2017+ LT4

Please take a few moments to review this manual thoroughly before you begin work: Make a quick parts check to be certain your kit is complete (see Bill of Material (BOM) parts list inside the accessory box). If you discover shipping damage or shortage, please call our offi ce immediately. Take a look at exactly what you are going to need in terms of tools, time, and experience. Review our limited warranty with care. When unpacking the supercharger kit DO NOT lift the supercharger assembly by the black plastic bypass actuator. This is pre-set from the factory and can be altered if used as a lifting point!

Caution: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fi re and personal injury. After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the risk of personal injury, cover the regulator and fuel line fi ttings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container when the job is complete.

Use only premium gasoline fuel, 91 octane or better.Use only premium gasoline fuel, 91 octane or better.

Magnuson Superchargers recommend that you run a minimum of one (1) tank of premium fuel through your vehicle prior to installation of the system to prevent any possible damage that may occur due to running the supercharged engine on lower octane fuel.

Magnuson Superchargers systems are designed for engines and vehicles in “GOOD” mechanical condition. Magnuson Superchargers recommend that a basic engine system “Health Check” be performed prior to the installation of this supercharger system. Be sure to check for any pending or actual OBDII codes and fi x/repair any of the stock systems/components causing these codes. If there are codes prior to the installation they will be there after the installation.

Magnuson Superchargers also recommend the following services to be performed on your vehicle before starting and running the vehicle post supercharger system installation:• Fuel Filter change• Engine oil and fi lter change using brand name oil (organic or synthetic) and fi lter

Note: It is VERY IMPORTANT to use the factory specifi ed oil viscosity. The original equipmentmanufacturer has selected this grade of oil to work with your other engine systems such as hydraulic chain tensioners and variable cam controls. Deviation from this specifi cation may cause these systems to fail or not function properly. Please refer to your owner’s manual for the recommended oil viscosity for your engine and application.

• On newer vehicles not requiring new spark plugs it is important to verify the spark plug air gap.

On older vehicles Magnuson Superchargers recommend these additional services to be performed:

• New spark plugs with the air gap set at the factory specifi cations OR new specifi cations if required bythe installation manual.• Coolant system pressure test and fl ush. NOTE: YOU MUST USE GM SPECIFIED COOLANTNOTE: YOU MUST USE GM SPECIFIED COOLANTMIXTURE.MIXTURE.

Non “Magnuson Approved” calibrations or “tuning” will Void ALL warranties and CARB certifi cation.

Drive belt = Gates#K080842HD

Tools RequiredMetric wrench set1/4” - 3/8” and 1/2” drive metric socket set (standard & deep)3/8” and 1/2” drive Ft-lbs and in-lbs torque wrenchesPhillips and fl at head screwdrivers1/2” breaker barSerpentine belt wrenchFuel line quick disconnect tools (included in kit)FunnelHose cuttersHose clamp pliersSafety glassesHammerNut driverCompressed airHeat gunMetric Allen socket set 3/8 driveMetric Allen wrenchesTorx socket set 3/8 drivePlastic pry barOetiker clamp pliers

Contact Information:Magnuson Superchargers 1990 Knoll Drive, Bldg AVentura, CA 93003

Sales/Technical Support Line (805) 642-8833Websites www.magnusonsuperchargers.comEmail [email protected]

Table of Contents

Section 1: Tuning your Vehicle Computer and Initial Steps 5Section 2: Removal of Factory Supercharger and Accessories 7Section 3: Preparing the Supercharger for Installation 24Section 4: Hose Line and Lid Installation 31Section 5: Coolant Line and Air Duct Installation 41Section 6: Coolant Fill and Final Testing 48

NOTE: This instruction manual follows the process we used to complete this installation on our test vehicle. This does not imply there aren’t alternate approaches.

2017+ LT4 Cadillac CTS-V Heartbeat

10/19 Page 4 www.magnusonsuperchargers.com

1. If your kit has a provided handheld tunerIf your kit has a provided handheld tunerfollow the instructions in the providedfollow the instructions in the providedpamphlet to install your tune.pamphlet to install your tune. Your handheldYour handheldtuner may not match the one shown.tuner may not match the one shown.

Section 1: Tuning your Vehicle Computer and Initial StepsAny reference to left or right side of vehi-Any reference to left or right side of vehi-cle is given from driver’s seat perspective. cle is given from driver’s seat perspective.

2. Your Intercooler system is sensitive tocorrosion. It’s very important to use theOEM recommended coolant mixture in yoursupercharger system as well.

3. Your system requires the use of minimum91 Octane gasoline fuel. This system is notnotcompatible with E85 fuel.

4. Access the battery which is in the trunk undera plastic cover on the left side.



6. Place a rag, or other appropriate insulatorover the negative terminal to preventaccidental connection once the negativebattery cable has been disconnected.

7. Place a rag over the rear hatch latch toprevent locking.

NegativeNegative

5. Remove the negative cable from the batterywith a 10mm wrench.

8. Remove the two nuts and two bolts holdingthe strut tower brace in place. Set the strutbrace aside for later installation. In the nextfew steps we will also be removing the plastictrim around the engine bay that you can seein this photo.



Section 2: Removal of Factory Supercharger and Accessories

9. Lift the plastic cover shown with the arrow. This is located near the fender on both sides of the car.

10. Under the cover that you lifted in the last photo you will fi nd a plastic clip that you will have to release in order to remove this panel. Repeat this process for the opposite side of the vehicle.

11. Use a screwdriver or small prybar to remove the plastic rivets securing the panels on both sides of the vehicle. Set the panels aside for installation later.

12. Pull up on the plastic engine cover located on top of the supercharger to remove it from the vehicle. In the next step you will see how it is fastened to the supercharger.



13. Here is the underside of the engine cover that was removed from the last step. You can see the 5 locations where it connects to the supercharger. This cover will not be reused.

14. Remove the two retainers for the fuel line at the back of the supercharger using a clip prybar at two locations.

15. Use a clip prybar to remove the plastic rivet at the airbox lid location shown with the arrow.

16. Here is the rivet location from the last step.



17. Unlock and unplug the MAF sensor at the arrow location shown. The next step will show the locking tab that must be released before you can unplug this connection.

18. Here you can see the locking tab of the MAF sensor that must be pulled back before you unplug the connection.

19. Disconnect the PCV hose shown at the arrow location by pressing inwards on the gray buttons and pulling it out.

20. Loosen the two hose clamps for the intake duct using an 8mm nut driver or standard screwdriver, and remove the intake duct.



22. Once you have removed the air box from the vehicle make sure that the rubber grommets are located in the three locations shown with the arrows. If they are not all present (like the one at the red arrow location) you will have to remove them from the airbox and place them in the proper areas.

21. Pull straight up on the air box to remove it from the vehicle.

23. Here is the rubber grommet that was stuck to the airbox. Remove it from the airbox and place it back in the fender well.

24. This is a close-up photo of the grommet returned to the fender well.



25. Disconnect the brake booster hose from the throttle body at the arrow location by fi rst pressing the gray buttons and then pulling out.

27. Disconnect the PCV hose at the arrow location.

26. Disconnect the PCV hose at the arrow location. This hose will not be reused.

28. Disconnect the opposite side of the hose from the last step at the valve cover. You will need to use a screwdriver or small pry bar to get down inside the cover to release the lock from the connector at the arrow location. This hose will be reused.



29. Pull back on the lock and disconnect the electrical connection from the EVAP solenoid.

30. Pull back on the red locking tab shown at the arrow and disconnect the throttle control electrical connection.

31. Release the lock with the blue tab for the MAP sensor at the arrow location using a screwdriver.

32. Unplug the connection that was unlocked in the last step.



33. Press the gray buttons for the EVAP solenoid hose and disconnect it.

34. Use a 10 mm socket wrench to remove the bolt securing the EVAP solenoid. Remove the EVAP solenoid and set it aside for installation in another location.

35. Pull on the gray locking tab and unplug the electrical connection shown at the arrow location. This is located below the front MAP sensor.

36. Press the gray release button and disconnect the EVAP hose shown here at the back of the fi rewall.



37. Pry up on the two cable retainers shown at the yellow arrow locations to remove them from the supercharger.

38. Unplug the bypass solenoid electrical connector.

39. Pry the cable retainers free at the four locations shown with arrows on the supercharger.

40. Pull straight up on the rear plastic cover to remove it. This will not be reused.



41. Pry the cable retainer shown off the rear of the supercharger.

42. Push the red locking tab with a small screwdriver, and unplug the connection at the rear MAP sensor.

43. Remove the supercharger belt by rotating the tensioner shown with the arrow in a counter-clockwise direction using a short 15mm socket wrench. This belt will not be reused.

44. Here you can see the 15mm socket wrench attached to the tensioner. Rotate it counterclockwise to release the belt tension and pull the belt off the pulleys. The belt will not be reused.



48. Here you can see a pry bar being used to remove the cable tie connection shown in the last step.

45. Pull up on the red locking tabs for the injector connections (8 each) and unplug them. Note: Note: You can remove the coil pack covers and You can remove the coil pack covers and coil packs to allow more clearance for the coil packs to allow more clearance for the supercharger installation, but it will take longer supercharger installation, but it will take longer for this process.for this process.

47. Use a pry bar to remove the cable tie connection shown with the arrow.

46. The arrows show the 8 injector locations. Some of the electrical connections have already been unplugged.



49. Place a cup under the intercooler connections as shown to collect the coolant that will be drained in the next few steps.

50. Use a pick or other appropriate tool to remove the two clips that secure the connections for the intercooler hoses.

51. Here is one of the two clips that was removed in the last step. These will not be used again.

52. Once you have removed the clips shown in the last step you can unplug the connection and drain the coolant into the cup. If this coolant is in good shape and kept clean it can be used later to refi ll the intercooler system.



53. Use some small bags and rubber bands or plugs to prevent coolant from spilling out of the hoses you just disconnected.

54. In order to drain more coolant from the supercharger you can install some hoses at the connections you just unplugged. Then place one hose in the drain cup while you pressurize the other hose. This should clear the majority of coolant out of the supercharger.

55. Seal the two connections on the supercharger side as well with plastic bags and rubber bands or plugs. Remove the front MAP sensor shown at the arrow location. This sensor will be installed in a new location in a later step using this OEM fastener.

56. Vacuum across the supercharger lid. Remove all debris from the counterbores shown with arrows.



57. Remove all 20 bolts holding the lid in place. Then remove the lid.

58. Remove the 10 bolts shown with arrows holding the supercharger housing in place. These bolts will not be reused.

59. Two of the bolts from the last step are hidden below the cowl. This is on the left rear of the supercharger.

60. Here is the other hidden bolt on the right rear of the supercharger at the yellow arrow location. Use a cable tie to temporarily hold the fuel line out of the way at the green arrow location.



61. At this point you will need some help to remove the supercharger from the engine. Have at least one other person on the opposite side of the engine bay while you lift it up. Carefully clean up the surface around the intake ports. Use isopropyl alcohol to clean the surface around the ports. Make sure Make sure nothing enters the intake ports.nothing enters the intake ports.

62. Clean and inspect the PCV fi tting shown with the arrow to ensure it isn’t damaged.

63. Apply blue tape over the ports to prevent anything from entering the engine. Remove the insulation from the manifold valley shown with an arrow. This insulation will not be reused.

64. Place rags around the fuel line shown at the left side of the engine. Remove the metal locking clip from the fuel line.



65. Eye protection is necessaryEye protection is necessary. . Use the provided plastic release tool to slide on the underside of the hose connection (shown with an arrow) and press up on it while you push down on the hose. This will release the connection. Be careful while releasing the connection because fuel will be released. Properly dispose of any fuel soaked rags after fuel line is removed.

66. Place a cap on the fuel inlet line shown with a red arrow, and a plug on the hose (shown with a yellow arrow) once the fuel line has been disconnected.

67. Remove the steel security clip from the fuel line shown with the yellow arrow. Also remove the plastic tether shown with the red arrow.

68. Here is a close-up of the security clip and tether. Remove and discard the plastic tether Remove and discard the plastic tether from the security clip.from the security clip. The metal security clip will be reused on the provided fuel line.



69. Once again use the provided fuel line removal tool to disconnect the fuel line on the opposite side of the OEM fuel line.

70. Gather the provided fuel line shown. This will replace the fuel line just removed.

71. Install the provided fuel line in the same place as the OEM fuel line. Reinstall the steel security clip without the plastic tetherwithout the plastic tether. Make sure to rotate the security clip to the side as shown to allow more clearance for the supercharger.

72. Install the bolt removed earlier into the end of the provided fuel line bracket. Leave this bolt Leave this bolt loose as it will be torqued later. loose as it will be torqued later.



73. Vacuum out the manifold valley to remove any debris.

74. Remove the MAP sensor from the back of the OEM supercharger.

75. Install the OEM MAP sensor from the last step on the left rear of the Magnuson supercharger.

76. Remove the 4 bolts shown with arrows using a 10 mm wrench, and remove the throttle body from the OEM supercharger.



77. Remove the two hoses from the bypass solenoid shown with the yellow arrows. Also remove the bypass solenoid from the OEM supercharger by removing the bolt at the red arrow location. The bypass solenoid will be installed in a new location later. The new supercharger uses a vacuum actuated bypass valve, but this bypass solenoid must maintain electrical connection for the system to work properly.

78. Apply some supplied Lubriplate grease to the PCV seal at the bottom of the Magnuson supercharger.

79. Supercharger assembly shown. Remove lid bolts (17 each) from the top with an 8 mm socket. Note the bolt locations for replacement in later steps.

80. Remove lid carefully. Make sure not to damage the O-ring seal on top of the housing.

Section 3: Preparing the Supercharger for Installation



81. Top view of supercharger without lid. Place cleanclean rag over the rotors to keep the area clean. Check that the alignment pins are still Check that the alignment pins are still installed in the locations shown with yellow installed in the locations shown with yellow arrows. The red arrow indicates the rubber arrows. The red arrow indicates the rubber cap that covers the “boost port” on the right cap that covers the “boost port” on the right side of the supercharger. side of the supercharger.

82. Remove the spigot retaining bolt from the supercharger with a 4 mm Allen wrench as shown. Then carefully remove the retaining bracket and spigots. Repeat on opposite side, taking note of spigot length and location. Remove the hose assemblies and set aside for later reinstallation.

83. Remove the charge air cooler fasteners (2 each) with a 3 mm Allen wrench. Repeat on opposite side.

84. Carefully pull out the charge air coolers by hand. Pull evenly around the perimeter to disengage the seal.



85. Apply blue Loctite 242 to longer thread section of the stud provided.

86. Install prepped stud into threaded hole at the left side rear head inlet port location. Adjust the thread height to 25-30 mm.

25-30mm25-30mm

87. Remove the blue tape from the intake ports.

88. Wipe down the intake port outer sealing surfaces with a rag coated with Tri-fl ow. Pull the coil harnesses to the sides to make clearance for supercharger installation. Ensure that there are no tools or other items left in the valley area before you install the supercharger.



89. Have someone help you locate the supercharger into the manifold valley location. Ensure that the blower fi ts over the stud that was installed earlier. Also align the PCV barb fi tting with the seal that you lubricated earlier.

90. Here we show the coil cover removed on the left side of the engine. This has only been done in these photos so you can see where the fuel line bolt is that might need to be loosened to allow more clearance for the supercharger. Torque this fastener back to Torque this fastener back to 108 in-lbs once you are done adjusting its 108 in-lbs once you are done adjusting its location.location.

91. Lift up on the supercharger and reinstall the 8 coil connections.

92. Plug in the MAP sensor at the rear of the supercharger.



93. Install nine of the provided seal washers onto two M6x35mm bolts and seven M6x45mm bolts as shown with yellow arrow. Also apply some provided Loctite 242 to the bolts as shown with the blue arrow. The M6 fl ange nut and the last seal washer will be used at the stud location installed earlier.

94. Ensure that the supercharger is sitting fl ush Ensure that the supercharger is sitting fl ush with the intake ports prior to installing the with the intake ports prior to installing the bolts.bolts. Place the seven M6x45mm bolts from last step with washers installed into the seven locations shown here with arrows. Thread them into these locations carefully by hand, and keep them loose for now.

96. 96. Install one of the provided seal washers at Install one of the provided seal washers at the stud location before installing the nut.the stud location before installing the nut. Use a magnet to help locate the nut at the stud location installed earlier (yellow arrow location). You can use a fl ashlight to help illuminate the area (blue arrow location).

95. Place the provided M6 fl ange nut on the end of an extendable magnet. It helps to have the magnet face attach to a fl at portion of the hex.



97. Use a magnet to help hold one of the provided M6 x 35mm length fl anged bolts. Ensure that a seal washer has been installed (shown with an arrow). Also ensure that Loctite 242 has been applied to this bolt. Install at right rear corner of supercharger.

98. Use a fl ashlight to help see the location of the right side rear mounting bolt as you guide it in place with the magnet.

99. Location of right rear fl anged mounting bolt. Hand tighten at this point until all mounting bolts are located.

100. Ensure that a provided M6 seal washer has been installed to the last provided M6 x 35mm length fl ange bolt, and apply Loctite 242 to the end. Install this M6 x 35mm bolt in the front location shown with an arrow. Only hand tighten.



101. You will fi nd a torque diagram at the back of this book. Make sure you installed the bolts with the O-rings in the proper locations. You will fi nd the torque order on the diagram. First fi nger tighten all bolts. Gradually work your way up to the torque specifi cation listed while you follow the numerical order listed in the diagram. Make 3 passes, slightly increasing Make 3 passes, slightly increasing tightening each time. Then make a fi nal pass tightening each time. Then make a fi nal pass at 108 in-lbs following the torque sequence.at 108 in-lbs following the torque sequence. Use an open end wrench to tighten the nut installed at the left rear of the supercharger

102. Apply some provided Lubriplate grease to the silicone seal around the outside of the charge air coolers prior to reinstalling them.

103. Reinstall the charge air coolers (2 each). Ensure that the port holes match with holes in the housing. Make sure the silicone seal does not roll upward.

104. Locate the four bolts that held the charge air coolers in place. Apply the provided Loctite 242 on the ends of each bolt.



105. Install the four bolts from the last step to secure the charge air coolers in the locations where they were originally. Use the ends of the coolant crossover hose assemblies that were removed earlier (shown in the next step) to help align the inlets of the coolers while you are tightening the charge air coolers in place.

Section 4: Hose Line and Lid Installation106. Gather the following coolant crossover hose

assemblies. The longer of these goes to the outside inlet holes on the supercharger.

107. Install the coolant crossovers in their original locations as shown. The longer hose connects the two outer ports.

108. Slide the lower hose behind the waterpump housing shown with the arrow. If you should notice any sharp edges at this location use the provided 7” long mesh to cover this lower hose.



110. Gather the following retainers for the coolant crossovers. Apply the provided Loctite 242 to the ends of the bolts as shown.

111. Install one of the retainers, and bolts from the last step in the location shown with the arrow. Repeat this procedure on the right side. Make sure the bolts are secure and tight.

112. Gather the following supplied front MAP sensor bracket assembly and 5/16”x20” long hose. Cut the hose to 12.5” and install it on the brass barb. This will allow you to reroute the front MAP sensor into a new location. Install the front MAP sensor that was removed from the OEM supercharger earlier to the adaptor using the OEM bolt in the location shown with an arrow.

109. If needed here is where the provided 7” long mesh should be installed on the longer hose from the last step.



113. Install the supplied M8x45mm bolt and spacer shown to the front MAP sensor mounting bracket assembly from the last step.

114. Remove the bolt from the location shown with the arrow. This bolt will not be reused.

115. Pry the electrical connection shown from the bracket just removed from the engine using a small screwdriver at the location shown.

116. Install the MAP sensor mounting bracket with the spacer and the M8x45mm bolt in the location where the OEM bracket was removed two steps ago.



117. Install the provided cable tie with the “tree” mount on it (shown with the yellow arrow) to the electrical connection from two steps ago and install the “tree” into the threaded hole shown with the red arrow. Also at this time reconnect the wiring plug to this connection.

118. Install the 5/16” hose that was attached to the front MAP sensor adaptor as shown. This hose has been highlighted in green for clarity. Connect the end of the hose to the 90° air fi tting shown with the arrow.

119. Torque the M8x45mm bolt holding the MAP Torque the M8x45mm bolt holding the MAP sensor adaptor to 108 in-lbs after the hose sensor adaptor to 108 in-lbs after the hose has been attached to the 90° air fi tting.has been attached to the 90° air fi tting.

120. Reinstall the EVAP electrical connection to the EVAP solenoid. Press in on the locating tab once the electrical plug is in place. Ensure that the electrical connection is secure. The EVAP hose will be installed in a later step using a provided hose.



121. Place the EVAP solenoid in the location shown with the yellow arrow.

122. Use the original bolt to secure the EVAP solenoid, and torque it in place to 108 in-lbstorque it in place to 108 in-lbs.

123. Unplug the other end of the brake booster hose assembly shown here highlighted in green. You can see a better image of this hose assembly in the next step.

124. The brake booster hose assembly shown at the top was removed in the last step. Gather the provided brake booster hose assembly shown at the bottom of this photo.



125. Install the provided brake booster hose assembly in the location shown. This hose has been highlighted in green for clarity.

127. Gather the provided fasteners shown for lid with 8 mm socket head. Apply a light coat of blue Loctite 242 to the bottom of each bolt as shown. From left to right we have M6 x 40 mm length (2 each), M6 x 35 mm length (2 each), and M6 x 20 mm length bolts (13 each).

128. Hand tighten the M6 x 35 mm length bolts (2 each) shown in the last step into locations shown with yellow arrows. Lightly tighten M6 x 40 mm length bolts (2 each) into rear locations shown with blue arrows.

126. Remove the OEM cable connectors shown with the arrows at the wiring harness. These will not be reused.



129. Secure the electrical loom using the two provided Adel clamps shown at the two lid bolt locations with the provided M6 x 20 mm length bolts (2 each). Leave these loose as they will be torqued in a later step.

130. Install the remaining M6 x 20 mm length bolts (11 each) from the earlier step around lid perimeter in the arrow locations.

131. Torque all lid bolts (17 each) to 108 in-lbs Torque all lid bolts (17 each) to 108 in-lbs using the torque order diagram in the back of using the torque order diagram in the back of this instruction manual.this instruction manual.

132. Tighten the bolts at the back of the lid with open end wrench.



133. Gather the following provided hose, shrink tube, and 90° fi ttings. You will have to cut this hose to a 34” length and remove 4” from the length of the mesh covering. After this you will slide the heat shrink tubing half way over each end of the mesh and the other half over the hose to protect the mesh from fraying. Use a heat gun to shrink the tubing over the ends of the mesh. Press the barbed fi ttings of each 90° fi tting into the ends of the hose until they bottom out.

136. The yellow arrow shows the EVAP line connection at the back of the supercharger from the last step. Remove the fuel line safety clip from the right side rear of the supercharger at the green arrow location.

135. Install the EVAP hose assembly from the last step in the location shown (highlighted in green). One side connects to the metal hose line behind the supercharger (shown with a yellow arrow) and the other side with the white release button connects to the EVAP solenoid (shown with a green arrow). (Note: This lid is not the same as that for the CTS-V).

134. The completed EVAP hose assembly from the last step should look like this.



137. Use the supplied plastic fuel line removal tool to disconnect the fuel line. Push forward on the hose and then pull back on the tool to release the connection, then pull it apart. Remove this fuel line. It will be replaced with a new provided hose in the next step.

138. Gather the following provided hose. The end shown with the arrow will be used to connect to the fuel line that was disconnected in the last step.

139. Plug in the supplied fuel line shown in the last step and secure with the OEM locking clip. Pull at this connector to ensure that it is fully engaged. This is the end with the “U” bend that was shown with an arrow in the last step. (Note: The EVAP line is shown . (Note: The EVAP line is shown disconnected in the next two photos for disconnected in the next two photos for clarity.)clarity.)

140. 140. Route the provided fuel line behind the OEM fuel hard line, and the EVAP line and secure it to the EVAP line with a provided cable tie with clip. This cable tie with clip is highlighted in green and shown with a green arrow.



141. 141. Use the provided double sided swivel clip Use the provided double sided swivel clip to separate the electrical harness from the to separate the electrical harness from the fuel line. This clip is highlighted in green and fuel line. This clip is highlighted in green and shown with a green arrow. shown with a green arrow.

142. Route the hose from the last step around the back of the supercharger and connect to the location shown with an arrow and secure it with the OEM locking clip. Ensure that the fuel line is fully engaged.

143. Install the throttle body to the inlet housing using the four OEM bolts. Torque the throttle Torque the throttle body bolts (4 each) to 108 in-lbs.body bolts (4 each) to 108 in-lbs. Also at this time plug in the electronic throttle control connector and other electrical connections that were removed from the area shown with the arrow. Press in on the locking tabs once they are plugged in. Ensure that the electrical connection is secure.

144. Use the diagram at the back of this manual to install the provided belt to the supercharger.



145. Here is the end of the other intercooler Here is the end of the other intercooler hose that ran to the OEM supercharger. hose that ran to the OEM supercharger. Loosen the hose clamp and slide it away from Loosen the hose clamp and slide it away from the connector. Remove the plastic fi tting. It will the connector. Remove the plastic fi tting. It will be replaced with the provided 90° fi tting in the be replaced with the provided 90° fi tting in the next step.next step.

Section 5: Coolant Line and Air Duct Installation

146. Install the provided 90° quick connect hose fi tting shown here, and reinstall the OEM clamp.

147. Connect the 90° fi tting that you installed in the last step to the outer male coupling on the supercharger.

148. Gather the provided reservoir and install it to the provided bracket using the 3 bolts that came attached to the reservoir.



149. Remove the two bolts shown at the red arrow locations and use this location to install the reservoir bracket from the last step. The bolt shown to the left can be torqued to 18 torqued to 18 ft-lbs.ft-lbs. The other bolt will be torqued when the strut tower brace is reinstalled. The 2.7mm thick spacer washer shown with the yellow arrow is provided with the kit. This is the thinner of the provided washers.

150. Gather the following provided hose assembly.

151. Plug the quick connect fi tting of the hose from the last step onto the inner male coupling of the supercharger.

152. Install the opposite end of the hose assembly from the last step at the back of the reservoir (shown with a yellow arrow) and use a provided worm gear clamp to secure the location.



153. Remove the clamp holding the inlet hose to the intercooler pump at the front of the engine, and remove this hose as shown. This clamp will be reused.

154. Trim the plastic cable tie away from the hose just removed in the last step and remove from vehicle. This hose will not be reused.

155. Here is the hose that was removed in the last step.

156. Gather the following 3.5”x26” 90° hose. This will be used to connect the reservoir to the intercooler pump inlet.



157. Connect the 3.5” side of the 90° hose from the last step onto the pump and secure it with the OEM spring clamp that was in this location.

158. Connect the opposite end of the 90° hose from the last step to the front lower reservoir outlet and secure with a provided worm gear clamp.

159. Gather the two dual hose tie wraps shown in the top image. The bottom image shows how to route the dual hose tie wrap. Do not Do not engage the zip tie in this step.engage the zip tie in this step.

160. Install the dual hose tie wraps in the two arrow locations shown.



161. Reinstall the airbox with a clean air fi lter installed. Reconnect the MAF sensor plug in the arrow location. Push in the locking tab on the electrical connection once you are done.

162. Remove the two OEM clamps shown with the arrows from the OEM inlet air tube. These will be used to install the provided inlet air tube.

163. Gather the provided air inlet tube shown and install the two OEM clamps that were removed in the last step.

164. Gather the provided air hose with quick connects on both sides.



165. Install the provided inlet air tube from two steps ago and tighten the OEM hose clamps at the red arrow locations. Install the provided air hose from the last step and install at the yellow arrow locations. Test that the quick connects lock in place by pulling at the ends.

166. Reconnect the factory cable tie “tree” in the arrow location.

167. Install the provided 2.7mm spacer washer at the red arrow location (this was shown in the photo where the reservoir bracket was installed earlier). Install the provided 5mm thick spacer washer at the yellow arrow location.

168. Install the two provided 5mm thick spacer washers at the yellow arrow locations of the opposite strut tower.



169. Reinstall the strut tower cross brace in the original locations with the OEM bolts and nuts. Torque the strut tower nuts and bolts to Torque the strut tower nuts and bolts to 18 ft-lbs.18 ft-lbs.

170. Gather the OEM bypass solenoid that was removed earlier and connect it to the original electrical connection near the water pump (shown with a yellow arrow). Install the two provided rubber caps shown with the red arrows. Secure the bypass solenoid with a provided cable tie shown with a green arrow using the OEM bracket from the OEM supercharger. This solenoid will be placed between the two PCV hose connections on the right front of the engine.

171. Reconnect the OEM hose back to the left valve cover and the yellow arrow location shown. Use the provided Adel clamp and a provided M6x12mm bolt to hold it secure at the red arrow location above the inlet.

172. Reinstall the plastic trim around the engine compartment.



173. Connect the negative terminal of the battery and tighten the nut with a 10 mm wrench.

Make sure that you have followed step #1 in Make sure that you have followed step #1 in this manual to load the proper supercharger this manual to load the proper supercharger calibration to your vehicle’s ECM.calibration to your vehicle’s ECM.

175. Have an assistant start the engine and let it idle for a few seconds to get the intercooler pump to start. Check for belt alignment at this time. Before the reservoir drains completely have your assistant turn the engine off. Do not let the reservoir run dry. Fill the reservoir some more and have your assistant cycle the engine again until you see the coolant level remain constant. While the pump is running check for circulation in the reservoir, and coolant leaks. Fill the reservoir to the base of the neck of the housing once all the air has been removed. Replace the reservoir cap.

176. The supercharger is shown fully installed. Start the engine and check for coolant, and fuel leaks. Test drive vehicle for the fi rst few miles under normal driving conditions. Do not Do not attempt any wide open throttle runsattempt any wide open throttle runs. . Check for any unusual sounds, vibrations, or engine misfi res. The supercharger does have a slight whining noise under boost conditions, which is normal. After the initial test let the engine cool down, and recheck coolant levels.

174. Place rags around the intercooler reservoir. Use the GM approved engine coolant mixture to fi ll your intercooler reservoir to capacity. You can temporarily leave the cap off the reservoir to monitor coolant level. Clear tools and other items from engine area.

Section 6: Coolant Fill and Final Testing



177. After the initial test drive gradually work the vehicle to wide open throttle runs. Listen for any engine detonation (pinging). If engine detonation is detected let up on the throttle immediately. Most detonation is caused by low octane gasoline still in the tank. Premium Premium 91 octane fuel is required.91 octane fuel is required. Enjoy your new supercharger!

If you have questions about your vehicles performance, please check with your installation facility.

Appendix

Supercharger Belt DiagramSupercharger Belt Diagram

After you fi nish your installation and road After you fi nish your installation and road test your vehicle, please fi ll out the warranty test your vehicle, please fi ll out the warranty registration. This can be found on our website.registration. This can be found on our website.



Supercharger Housing Torque Order Diagram

Appendix



Supercharger Lid Torque Order Diagram

Appendix



Please enjoy your “Magnuson Super-Charged” performance responsibly.

Use only premium gasoline fuel, 91 octane or better.Use only premium gasoline fuel, 91 octane or better.

Documents

Installation Instructions for: 2017+ LT4 CADILLAC …...SUPERCHARGER SYSTEM Step-by-step instructions for installing the HeartBeatHeartBeat of supercharger systems. Magnuson Superchargers