car is a 1999 c5 with a stroked ls2 big cam and ported l92 heads intake setup.
car starts/runs drives fine until it starts going into closed loop learn mode. it seems as though the computer is commanding too lean of a mixture, so I disabled closed loop, but the car seems to be using the stft for fueling in open loop??
log and tune attached.
When I look at your datalog, at 2209 - 2250 the only time you get cross counts is when the short term fuel trims are -21% to -26%. So it looks to me like you are quite rich. Have you installed bigger injectors than stock?
Looks like your file still is using the stock injector constant.
Mark
Mark
I was gonna say the same thing I too have the L92 heads and am using the L76 intake which I assume you are using as well and they come with the 40 pound injectors so if you are using the injectors that came with it you'll need to change the IFR to reflect that change
the car has 40's in it... oops...
no answer as to whether olmaf uses stft??
if you have open loop STFT disabled, no. If it is enabled, yes.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
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