Hey I have a 98 TA with lid, FRA, LT headers, and just recently hptuners. I have my part throttle pretty much down. (L-trims at 0 at wot) I have my ifr table at 94% and my pe at 94% and my wot 02s still read 940-950. Why are they still so high? Do i need to adjust the open loop table as well as the pe table? thanks for your help.

 

The stock 02's are just too inaccurate to say yes or no. Probably the only way to even remotely figure it out is to lean it out 5-7%, then go back to base, then richen it up 5-7%. Watch the MAF gms/sec and acceleration rate during 2-3-4 gear run. If the MAF goes does and/or the acceleration rate declines or increases then you know you are heading the right direction. The only right way to do it though is with a wideband 02.