Will

iTrader: (1)

Alright, now going back to the stock tune, I am getting rough idle! Could I have ruined my O2's running it too rich?

supercharged tahoe ss

have you changed your knock sensors i changed mine and my tuner set the knock sensors at a lower setting my exhaust was making false knock but like every one said you need a wide band o2s. i never got wide band o2s but i welded a bung so my tuner could tune with his wide band. and now my truck runs great.