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R32 GTR
Posted: Tue Apr 14, 2020 4:43 pm
by jjtxaz24
I got a question about my idle AFR. It sits pretty lean (15.4-16.4 +/- a few ) it jumps around a lot. I wanna bring the idle down to a good AFR.
Do I adjust the timing at idle (currently at 20°) or mess with the fuel trim, or K constants?
Thanks for the help in advance.
Re: R32 GTR
Posted: Wed Apr 15, 2020 10:23 pm
by Matt
Shoudn't be idling that lean. What injectors are you running? If cruise mixtures are okay (14.7:1 with near 0% trim) then increase latency, and check for air leaks
Re: R32 GTR
Posted: Thu Apr 16, 2020 4:44 pm
by jjtxaz24
I'm still running the stock injectors, it cruises around 14.7-15.3ish.
Re: R32 GTR
Posted: Fri Apr 17, 2020 6:24 pm
by Matt
Seems a bit lean if you have factory tune loaded in there. Could be an O2 sensor leaning out the trim. You can test this if you see 0% trims but the AFRs are showing leaner than 14.7:1