Quote Originally Posted by Crapdaz View Post
yeh could be because you dropped it the sensors think it's polluting too much so you get the check light.

So might need to get a defouler or something, to amend the problem.

I am running 300cell hi flow ceramic cat and havent had any problems, but then might be because of dCsports headers are more restrictive than your j's racing.
Damn, and you've never got CEL? Where is your 2nd o2 sensor and is it already in an extended bung? I'm thinking the easiest fix would be to find a nut the same thread as the o2 sensor and weld it onto the existing bung maybe... Can't find a defouler anywhere!