I've been chasing a low O2 problem. Installed new Accufab adjustable fpr today replacing a 15 yr old ATR unit. It brought O2 numbers up from around 600 at idle to 777-789. AF 04,INT 128,BL 137,TPS .44, IAC 25, Turbo Tweak chip,new Racetronix pump month ago.
FP set at 44-46 but it will not go...