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Combined fuel trim on 2g: what to log to adjust it

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onefast2gdsm

15+ Year Contributor
866
6
Aug 30, 2010
millersburg, Pennsylvania
On first gens, i know you log STFT and LTFT lo. Well, i dont know if its true or not, but i heard on 2nd gens you dont go by LTFT lo. My LTFT lo is -12.5 amd the car idles lean. My STFT is perfect, and if i add enough deadtime to make the car idle at 14.7, the front o2 stops cycling and i get a cel for fuel trims. I should also add that my global is set right, so i know that should answer that question.
 
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