Working on a 2001 Vette, STS twin kit 13 psi of boost, converted to 2 bar. Built 6.0 STS cam, recetronics fuel pump, 60 lb injectors. Here is a log look at frame #2794 and you will see cylinder air mass is at .72 But im at 12 psi of boost and the O2's are close to zero. In the Boost enrichment is set to 1.6 and still lean. This doesn't happen everytime. I know that is way to much, but it wants that large #. Very confused!!!
Shop Owner, Tuner and Headache Specialist
are you confirming the lean condition with wideband also?
Yes I have, I have a Dynojet and the wideband is in the exhaust not in the tailpipe. What im getting is the data logs only go to 140kpa but in reality its 180kpa, ive tried everything to get the data loger to read the correct kpa but haven't had any luck. I logged it with my dyno and it is def going to 180, using the same part # sensor. The tune is close now but as the car comes onto boost it still has a lean spot. I have the BE at 1.6 in that spot. The injector ms reach 22 to 23 at that time then calm down. You can see it in the data log.
Shop Owner, Tuner and Headache Specialist
Delete the Map SAE Pid, as the chart & histogram displays averages the Map SAE & Map 2 bar Pids.
Also your not in SD mode, set the P0103 Maf code to no light, not no error.
Russ Kemp
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