ok im waiting to hear back from my tuner at predator but he mess with the fuel trims and it seems at WOT that the o2's are reading low 800's about 830. before it was about 850 i dont think he adjusted this but if he didnt with him making the fuel trims go from + to - make the change in WOT fuel? also if i adjusted the PE up some would that be doing the same thing he would be doing to bring the WOT numerbs up? if so how much should i go up to bring 825 to 900 and what about 850 to 900?

 

come on guys, i dont wanna hurt my motor i need help

 

thanks

 

You cannot really trust the O2s for WOT tuning. I had my AFR @ 13.0 and my O2s read 830 - 850 with stock exhaust manifolds. I installed headers afterwards (LTFT went up only +2) but my O2s are now 930-950.

You need to use a wideband to really tune it, but you have probably heard this before.

 

yeah i just have to find someone with one. now if i get rid of the cats will that make the stock o2s a little more accutate?

 

Not sure about the accuracy question, but if you can monitor, some people will tune lean until they start getting KR at WOT, then tune rich a little. Not really the safest way but... Are you getting any KR at WOT?

 

i get no kr at WOT, sometimes i get some i think though. but not mcuh