It popped back on today for the 2nd time in 3 weeks....it first happened after i had my stillen intake installed and on for about 3 days. I reset it with the pedal method and didn't think much about it, and just now it popped back up, gonna take it to autozone and check it tomorrow.

meh - i hope its nothing serious. Reason im making a post is to ask...i remember the dude i installed my cat's with saying that after a while the cats might through the sensors off and cause a CEL. What do you guys think?

 

yea - o2 sensor's on the cat's are triggering the CEL. I just reset it - but its gonna worry me if it keeps coming on - what do you guys think, will it be bad for the car in the long run?

 

well technically O2s should last for a long time unless you have a rich mixture in the engine. Vacuum leaks anywhere on the manifold or intake tube will trigger the ECU to dump more fuel. More fuel = bad for O2 sensors.. Check you stillen intake and MAF, double check every clamp and bolt.

If you have low miles go to the dealer, I think this could be covered by warranty. I'm not sure though, might want to get some more feedback from someone who knows for sure.

Good luck

 

thing is if i take it to the dealer ill get bitched at for having cats on there - gonna double check my intake hookup's

 

I have Kinetix HFCs and haven't had any trouble with O2 sensor codes.

 

didnt you buy your HFCs used? if so, how many miles were on hem previously? they may have taken a ****, lol.

try non-foulers.

 

nah - bought them new about 10k miles ago...