Thats what I thought. Just wishfull thinking. I had the rears turned off with the tune, any chance the fronts won't throw a code any more????

 

If the code light function is turn off for the fronts, you got any type os scan? autozones does scan for free.

 

No, I dont have any type of scan tool. Wondering maybe if they are just fouled, but still working, causing the SES light not to come on. Also, What kind of O2's should I use if they are bad? I thought I read something about vette sensors?

 

Get bosch sensors they are the best IMO they are also OEM. Oh yeah and they are like 70 bucks a piece.

 

DAMN, any way to test them first? Or clean them? I'm thinking they may have gotten fouled from the seafoam.

 

Unplug them and pull them out of the bung and try and blow them out but is quiet possible that the seafoam did it thats why I am staying away from that stuff it causes too many problems. Ho wbad did it smoke and what color was it.

 

Heres the thing though, you said it popping and pinging right. Usaually, not always, thats a sign of not enough fuel and too much air or too much timing advancement. If it was the o2 I thought they would make you run more rich than lean!! It sounds like you're leaning out and getting KR from it.

 

Try free reving it and see if you hear anything diff or the same when its under load. That might help determine what it is

 

It was light grey, it smoked some, but I have never done it before, so I had nothing to compare it to. Yea, I fouled a brand new set of Iridium plugs too ouch. Can I spray them off with carb cleaner, or will that make them worse?

 

It seems to be only under a load.