idle log

[dsmreck]

hope this worked my first log post I'm not sure what needs to be known about the engine or settup so ill assume you need to know it's a
4g64,4g63, bc 280, smim, no pcv, catch can w/filter, gm maf, maf tans. mtxl wb in front o2 location set to log on rear 02 with narrowband sim in front 02 1000cc precision, e85,
fuel pressure close to 48 psi

 

[Fehrion_sit]

first thing that jumps out to me is your airflowperrev is .40 which seems high? not sure on E85 and your wideband error (wbfactor) is no where near zero. i would try adjusting the MAF comp or dead time to get your airflowperrev and wbfactor with in spec. exact specs on your engine and setup would help

 

[dsmreck]

what exactly are you asking as far as specs go?. That tune was for the car back in 2008 for 522hp. The car spun a bearing. The car was rebuilt back up and here it sits. Dont know much about tuning, but I know by resetting everything and starting fresh, I can scale the injectors for around 450 dead time and 31 global like ecmlink wiki says for e85 and my short trims look better. someone help me more please. I will be going for a dyno tune again, but not for a while yet

 

[Fehrion_sit]

using the ECMLINK deadtime table, and everything else should be MAF tuning to bring wbfactor closer to zero. you could adjust the dead time a little bit to fine tune. in the log your STFT is 16% which is more than twice what it should be. your problem is with measuring air as far as i can see. zero your maf comp and start over. set the dead time to what the chart suggest from ecmlink.

 

[dsmreck]

ok I can try that for sure but when I moved my 50 htz maf slider to zero I ran really lean at idle. like 19 or 20. What I dont understand is my trims look like crap but wb says i'm good. I understand that my global and deadtime shouls be more like 31 and 450, but when i do that my trims will be long term 4 to 5% short term will be negative and cannot get them to work together with the maf sliders, so I finally just used the tune that was on the car in 2008.

 

[Fehrion_sit]

my suggestion than would be to remove the translator or zero it. maybe wiring in the gm Maf straight to dsmlink. i know v3 supports it. the problem defiantly seems to be with air metering not fuel delivery.

i know its a dead horse, but make sure everything is perfect working order, mechanical timing, boost leaks and exhaust leaks are taken care of. i would also check your fan operation. im seeing 203F constant temp. maybe my 1g just runs cooler?

i would start by reading this thread and checking out the links on it.
http://www.dsmtuners.com/forums/newbie-forum/433733-help-gm-maf-speed-density.html

 

[dsmreck]

i will re re recheck everything again, but thats what i'm thinking also maybe the maf. so how do I reset that thing? never heard that. also The kid guy before me has the fans on a toggle so I cant remember if i had the fan on at that time. I also bought a 195 because it's cold as crap here and my e85 and short trips the car has taken this winter has been hell on my oil.