Originally Posted by poconojoe
Are you running long tubes?
No stock 2002 F-body LS1 exhaust manifolds and stock y pipe with straight pipes in place of the cats(for now)
After switching I drove the car about 40 miles then the light went out then came back on about 40 miles later and hasn't been out since.
I'm looking at some new sensors and I saw the NGK heated 4 wire ones 21528 and 21544 $104.06 for the pair at Amazon.com