PonyKiln

Ok guys I have had bad O'2 sensors for a couple of hundred miles. Just wondering how bad it is on the motor to have bad ones? I am shooting fireballs between shifts at the track and I'm running the best I have ever run. I plan on getting new O'2's and a new tune soon but how bad is it to run with bad ones? I'm talking about the fronts. TIA guys

horist

well if you're running that rich.. your spark plugs will hate you and there's a possibility of washing down the cylinder walls ...