I believe it is also called that in BBL. If you want to verify it is the correct one, unplug your temp sensor where it goes over your turbo mouthpiece. IIRC, it should read -40 F when unplugged.
I believe it is also called that in BBL. If you want to verify it is the correct one, unplug your temp sensor where it goes over your turbo mouthpiece. IIRC, it should read -40 F when unplugged.
Well SAE.IAT is the one that is measured at the MAF (pre-turbo) Dunno whats going on with this IAT2
'07 TBSS, LS2, T42, 3SS, Black on Black on Black, Pretty much stock at the moment. EFILive will fix that
'06 LBZ/Allison 6speed, EC, LB, 1LT, Leather
Current Mods: EFI Live/ PTO High Idle Mod/ Factory Exhaust Brake / BD Full Bore/ TransGo Jr./ TTS Twin Lift Pumps/ MBRP 4" turbo back/ Custom air box mod/ BullyDog Outlook Monitor
465hp/1008tq---7/25/09---Dyno Day Fast SpecialtiesTuning by ME
Hmmm, I guess I was remembering wrong.Originally Posted by bballer182
I'm also having trouble with the VSS from the TCM also. It reads zero all the time. Does anyone else's work?
'07 TBSS, LS2, T42, 3SS, Black on Black on Black, Pretty much stock at the moment. EFILive will fix that
'06 LBZ/Allison 6speed, EC, LB, 1LT, Leather
Current Mods: EFI Live/ PTO High Idle Mod/ Factory Exhaust Brake / BD Full Bore/ TransGo Jr./ TTS Twin Lift Pumps/ MBRP 4" turbo back/ Custom air box mod/ BullyDog Outlook Monitor
465hp/1008tq---7/25/09---Dyno Day Fast Specialties
FWIW..
IAT is with the MAP sensor pre turbo on the LMMs.
IAT2 is in the Y bridge on the LMMs. IAT2 is a seprate sensor (looks like a EGT Sensor)
I can only assume LBZ is the same.
12 Second LMM
I'm beginning to wonder if this is an LMM thing and not an LBZ...
'07 TBSS, LS2, T42, 3SS, Black on Black on Black, Pretty much stock at the moment. EFILive will fix that
'06 LBZ/Allison 6speed, EC, LB, 1LT, Leather
Current Mods: EFI Live/ PTO High Idle Mod/ Factory Exhaust Brake / BD Full Bore/ TransGo Jr./ TTS Twin Lift Pumps/ MBRP 4" turbo back/ Custom air box mod/ BullyDog Outlook Monitor
465hp/1008tq---7/25/09---Dyno Day Fast Specialties
It does continue to confuse. IAT appears to be dampened on the LBZ I am testing. It suggests it is not being measure at the MAF.
Is there confirmed temp signal at the MAF (06-on)?
Michael, Systems Engineer 04.5 D-max LLY, Phoenix, Arizona Email
Custom Tuning Services
DURAMAX/CUMMINS ECM's TCM's for sale, all years, 20% wholesale discount available
EFILive's first VGT "Software Wastegate Tune"
To resurrect an old thread.... The Tech2 shows an IAT1 and IAT2 under "Engine Data 1". IAT 1 is cooler than IAT2. I've confirmed this on a running LBZ. So they ARE both there in teh data stream from the ECM. Any thoughts Ross?
can you throw up a log, with both shown, a 30 second high load log (use brakes) with AAT, IAT, and IAT2. IIRC, IAT is going to be a dampened slow rise (CAC heat soak) suggesting location post CAC.
If my hunch is correct, IAT is going to be pre-egr, IAT2 will be post egr.
Michael, Systems Engineer 04.5 D-max LLY, Phoenix, Arizona Email
Custom Tuning Services
DURAMAX/CUMMINS ECM's TCM's for sale, all years, 20% wholesale discount available
EFILive's first VGT "Software Wastegate Tune"
IAT2 will be quite a bit hotter under pressure (boost pressure).
IAT1 will be hotter than ambient as its read right next to engine.
IAT1 is ambient + what ever under hood temp is changing it to.
IAT1&2 should be about the same crusing with little or no boost.
12 Second LMM
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