what to do when tuning fuel trims?!

[redgst95]

i just recently got my car running the way i want it for now but i think that im still running way to rich! i have a 190 fp w/ a afc,as far as fuel mods. when i put it on the logger i could bring it down to .92v on the o2's but still smell fuel and it backfires everytime i shift out of a gear when just crusing ,and also a friend of mine was riding behind when i was running somebody and said he smelt nothing but straight gas when i got on it! now i didnt think that i would need a fpr with having only a 190,but could that be a reason for this??!! i also want to do something with my fuel trims but im not really sure on what to do and look for as far as with the logger! please leave me some info on this please!!!thanks in advance!!!

 

[CanadianTSi]

Concentrait on getting your STFT as close to 0 as possible, do this at idle and then 1500,2k,2.5,3k and 3.5.

Simply watch your STFT on the logger and make the needed adjustments to your low settings.