I was tuning a 99 Firehawk with LT's, ORY, Sweet Thunder Mufflers, SLP lid, and a 4000 Converter. I upgraded the OS to the 2002 system and when I started logging, the LTFT's and STFT's were on 0 and they stayed there. So I looked at the O2 mv's, one stayed at ~.800 and the other ~.440. Niether switched at all. As far as I know they are the originals, and the car has 75,000 miles. Do you guys think that the O2's are shot and causing the fuel trims to be inactive?
Thanks Ryan