V2.0

ClosedLoop

MAFScalingusingRomRaiderLoggerv0.5.0beta

ByDweeb

Disclaimer:READIT!!!!

Ihavenotdevelopedthisproduct,soImaybewrongoncertainthings.Iamnotresponsibleforanythingthatmayhappentoyou,yourengineoranythingforthatmatter,ifyouuseandorfollowthismanualanditsinstructions.Afterall,IamaDweeb!

Thisisjustmywayofdoingthings,andothers(RomRaiderdevelopersorthemoreknowledgeableRomRaideruser)maydisagreewithwhatIhavewrittenhere.ThiswasoriginallydoneforafriendtoshowhowIdidmyscaling.Itworkedforme

IcanbereachedonRomRaiderforum,userIDDweebifyouhaveanycomments,correctionorsuggestions.

AllcreditsforthiswonderfulprogramgotothedevelopersofRomRaiderandtheRomRaiderLogger.

MAFScaling16bitECU LetsstartwiththeRomRaiderv0.5.0.Beta,Thelatestreleaseatthispoint.www.romraider.com

Pleasemakesureyouhavethelatestdefinitionsinstalled,theycanbefoundatwww.romraider.comandpleasereadthiswholemanualbeforestarting!

OpenRomRaider,andthenopenyourECU(hexorbin)file.Oncethatisdone,selecttheMAFfolderandclickonMAFSensorScalingthiswillopenthiswindow.(yourscreenshouldlooksomethinglikethis)Yourhex/binfile(theoneyouwanttomodify)needstobeopenforthistowork.

Orlookslikethis.(infullscreen)

Nextstepisopening/startingtheLogger.InRomRaidersmainmenuselectLogger,thenmakesureyouselectLaunchECULogger.

Ittakesfewsecondstoopenup,sopleasebepatient.WhentheECULoggerappopensup,itlookslikethis.

Inthisscreenyoucanlogandviewalloftheparametersthatareavailbletosee/logforyourECU.Butwedonotneedtoworryaboutthisscreenfornow.Leaveitblankasabove,andDONOTselectanyparameterslikeinthescreenbellow.(thereasonforthisis,themoreParametersyouhaveselected,theslowerthepollingoftheECUwillbe=loweramountofqueriespersecondthatyoucanretrieveandlog).

ThenextthingthatyoumustdoisselecttheMAFtabonthebottomoftheECULoggerwindowbyclickingonit.

WhenyouselecttheMAFtab,thescreenshouldlooklikethisnow.(seebellow).NowselecttheCOMPortthatyouhaveyourTactrixcablehookedupto.Makesureyoucarisstarted(running),oratleasttheignitionisintheONposition.(weneedtotesttheconnectiontotheECU).

OncetheCOMPortisselected,clickontheResetECUConnectionbutton.

1.FirstyoushouldseeConnectingtoECUintheTopRightcornerofyourLoggerwindow,TopRightofwindowThen>

2.IfyourconnectiontotheECUiscorrect,youwillseeinthecornersofyourECULoggerwindow.(QueryingECUorSelectparameterstobeloggedonthebottomleft,andReadingdataontopright)BottomLeftofwindowBottomLeftofwindowTopRightofwindow

IfyouhaveReadingDataintheTopRightcornerofyourLogger,youareconnected,Great!

ThenextthingwemustmodifyistheFilterDatafortheMAFRange(g/s)andMax.IntakeTemp.YoucanalsolowertheMin.CoolantTempifyoulike.

IusuallybumptheMAFRange(g/s)toabout0to150,norealreasonforit,asyouareoutofClosedLoopbythen.IdoitjustincaseIgetaweirdreadingfromtheMAF,IliketoseeitPOPupaweirdlyplaceddotsonthescreen..ThestockdefaultvaluesinthisRomRaiderversiondonotworkverywell(astheMax.IntakeTemp)istoolowforthesummer.Iusuallybumpituptoatleast150200degreesF.IthinkthereasonbehindthelowMax.IntakeTempisfortheloggernottoLOGtheAFRcorrectionsifyouaregettinghotair(heatsoak)whenstandingstill.(Imaybewrongonthis,Ididntdevelopthesoftware)

StockSettings thesearethevaluesthatIchange MySettings.

NOTE:Youcandoatestlog/graphjustbyrecordingyourcaridlingtoseeiftheloggingisworkingbeforeyougoout.JustmakesurethecariswarmedupandabovetheMin.CoolantTemp.value,andtheintakeairtempisbellowtheMax.IntakeTemp.value.(thatiswhyIsetMaxIntakeAirvaluehigh)

NowthatwehaveadjustedsomeoftheDataFilters,weareatthisscreen,hopefullyenginerunningandConnectedtotheECU.

NowwearereadytostartloggingtheMAF(v)againsttheAFRCorrection.Whatyouneedtodoisgoforanicelongdrive(atleast40minutes)tologtheClosedLoopcorrection.Thereare2waysofdoingthis.1.Normaldriving,differentgearsandspeeds,butkeepingitinclosedloopasmuchaspossible.2.Highwaydriving,inhighgear,andcruisingatdifferentrpmswithverylittleload.thisiswhatIdo

Sofindanemptylooooooooongroad,orahighwayat2am.(thereasonfortheemptyroadisyouaregoingtogodifferentspeeds,andhavingpeoplebehindyoubeepingtheirhorngetsannoyingafterawhile).So,onceyoufindthisroad,andyoucarisuptotemp,startdriving.Youneedtostartdrivingsmoothin5thor6thgear,withenginespeedschangingbetween12003500rpm.Remember,nosuddenmovesofthethrottle(begentle),besmooth,anddonotgointoboost!RememberyouneedtostayinClosedLoop.Whenready,presstheRecordDatabutton.Thebuttonwillturnslightlydarkerwithathickerborder(toindicateitisLogging),butitishardtosee. (IwishthebuttonturnedRED!!,hint,hint,greatandallmightydevelopers)NotRecording RecordingRememberyoucandoasampletestbyrecordingidlingtoseeiftheloggingisworkingbeforeyougoout.

AfterpressingtheRecordDatabutton,recording/loggingwillstart,anditwillstarttodisplayDOTSintheblackwindow(graphingregion)seebellowforexample.IfyouarenotseeinganyDOTSafterfewseconds,thereisaproblem.YoumayhavetheincorrectFilterDatavalues.Checkitover.Makesureyouareconnected.

ThisisaTestLogwhileidlingaboutaminuteandburpingthethrottleveryslightlyjusttoseeifeverythingisworkingfine,andifyouarelogging..

Whenrecording/logging,ifyouneedtostoporslowdownalot,youcanalwaysPausetherecordingbypressingtheRecordDataagain,(thiswillSTOP/Pausetherecordingforthetimebeing)andthenyoucanpresstheRecordDataagaintocontinuerecording.Thisfeaturehelpsifyoudonthaveaplacewhereyoucandrivelongdistancewithoutstopping.SojustcontinuetoLOG,thelongertherecording/loggingsessionthebetter.Butremember,youwillneedtodothisafewtimesovertoscaleyourMAFproperly,(asinrecord,adjusttheMAFScaling,saverecord,adjusttheMAFScaling,save,record,adjusttheMAFScaling,save)sodontdoasinglewholedaydrive/log.Insteaddoafew5minidleLogs,thenfew3040mindrives,andlogdifferentRPMandloads.(ittakestime,patienceandpracticetogetitright).Thiswillgetyouprettyclose.

*****UPDATE*****July2008

InthenewestversionofRomRaiderv0.5.1BetaRC2youcanseewherethelatestDOTisplacedonthegraphwhenyouareloggingyourMAFcorrections.Itisbiggeranddifferentcolor.Thisgreatfeaturemakesiteasiertoseewhatisgoingon.(Pleasedisregardthebluelineinthegraphfornow)

Afterdrivingforabout3045minutes,yourGraphwindowshouldlooklikethis,(abigmess)withmanyDOTSonit.ToSTOPrecordingpresstheRecordDatabuttonagain.Oncestopped,findasafespotofftheroadandpark.Next,youneedtoInterpolatetheDATALog.

PresstheInterpolatebutton.ThiswillaverageouttheCorrectionsmadetothefuelingatanygivenMAF(v).YoucangetdifferentcurvesbychangingtheInterpolationvalue. (thevalueof10worksfairlywellformostcases)(SeedifferentscenarioswithdifferentPoly.ordervaluesbellow)

FromwhatIunderstandthisBlueLinerepresentstheaverageAFcorrectionvaluethattheECUappliedtothefueldeliveryinClosedLoopatthespecificengineloadsandRPMs.

Nextpageshows2graphswithdifferentInterpolationvalues,avalueof3and20.Thegraphsarescaled(squished)versionsofabovegraphtofit2onapage.YoucanseethedifferencethePoly.OrdervaluemakesontheblueLine

OnceyoudecidedwhatisthebestInterpolatevalue(thedefaultvalueof10worksfairlywellusually),thenextthingtodoisapplythisCorrectiontotheexistingMAFSensorScalingtabletoyourOpenedMapinRomRaider..

ButfirstyoumustdecidewhatistheMAFvRangethatyouwanttoupdate.IpersonallylookforaregioninthegraphthathasalotofDOTS(logvalues)andIpickthevaluesMAF(v)thatcorrespondtothisregion.OrifIamlookingandtryingtofixaspecificAFRorotherproblemareasthenIwouldusethevaluesthatcorrespondtotheseareas.TheMAF(v)valuesareatthebottomofthegraph.

Asanexampleonthisgraph,IwouldtakethevaluesofMAF(v)from1.75to2.45,andinputthemintotheMAFvRangeboxes

Theyellowlinesarefordemonstration

TheupdatingoftheMAFSensorScalingmapisaccomplishedbyselectingtheUpdateMAFbutton.(DONOTUpdateyet!)

NOTE:Youmaychoosetoupdateonlyavaluefrom1.80to2.10forexample.Itdoesnotneedtobethewholegraph(wholeMAF(v)scale).Youcanalsoupdatemultipleregions,oneatatime.Asin,firstyouupdate1.351.60,thenyouupdate1.952.25,then2.402.60,andsoon.

NextIliketobringthemainRomRaiderwindowtothefrontandthenoverlaytheLoggerwindowinfrontlikethis.ThiswayIcanseebothmyLog/GraphMapandmyoriginalMAFSensorScalingmap.

OnceyouhaveselectedandinputtedthecorrectvaluesintotheMAFvRangethatyouwishtoupdate,PresstheUpdateMAFbutton.

WhentheConfirmationUpdateboxpopsup. SelectYES.

NowlookatthevaluesintheMAF(v)rageintheMAFSensorScalingmapthatyouspecifiedtochange.

SomeoftheCellswithintheselectedMAF(v)valueswillbeoutlinedindifferentcolors.ThesearetheCellsthathavebeenchanged/updatedtonewvalues.***PleasecheckthatthevaluesoutoftheselectedregionhaveNOTchanged***

Youcancheckwhatcorrections/updatesweremadetotheseCellbyclickingonTablethenselectingCompareandShowChanges.

YoucanselecttoshoweitherPercentageorDifferencethathasbeenapplied.

AbsoltueDifference CloseupoftheMAFSensorScalingmapwithappliedcorrections.

PercentageDifference

Onceyouhaveverifiedthechanges,(anditlooksOK)youneedtosavethechanges.

ClickontheHardDriveicon,thiswillbringuptheSavefilewindow.Renamethefiletosomethingnew(incaseyoumakeamistake)andthensaveit.

ThatsallthestepsforscalingtheMAFusingtheLogger.NowuploadthenewlysavedfiletoyourECUwithyourfavoriteECUflashing/uploadingprogram.Nowyouneedtorepeatthesestepsfewtimestoachievethedesiredresult(properlyscaledMAF),sogooutandlogsomemore.(pleasewatchyourAFRvalueswhenyougoforadriveafteryouhaveflashed/uploadedthenewfiletoyourECU).

YouwillneedtodothisLog/Scale/Correctionstepsfewtimes,theamountwilldependonhowbadtheactualMAFSensorScalingwasorwhatyouaretryingtocompensatefororadjustfor.ThisshouldhelpyoutodialinyourMAF,ifyouchangedyourMAFpipediameter(asinBiggerMAFpipe),differentintakepipesetc.BasicallyanychangethatmayhaveaffectedthereadingyourMAFisreturningtoyourECU.