Originally Posted by firebuick
you run the very real risk of going too lean
whit my aeroforce gauge what should i look for if im lean
my 02 is between 905 and 915
maf freq im at 8975 never in the 9000 range
You'll want to be looking out for KR, of course...but if you're going too lean for PCM compensation, your long term fuel trim (LTFT) will peg at +16.4
(All this is after fuel trims have re-learned, of course)
BTW, that'* your WOT O2 readings, right? That sounds about right to me for the overly rich factory PCM setting...you'd be able to get better WOT power if you could lean that out (to maybe 880-890) without inducing KR.
Also, your MAF frequency readings sound right to me for your stock '98 L36 TB with your current mods.