When I bought the car the back cat was gone. Now i,m putting on an invidia up-pipe. I was wondring if i,m gonna throw a cell and what am i gonna have to do if it does?
Its not there. It looks like they had a buddy bend up a cat back from the first cat. Welded in a bung half way down where the cat would be.
My 07 hasn't thrown one yet. Catless up and the third cat delete. (True, mine came catless uppipe, so IDK for sure)
I have the grimmspeed up-pipe in my 02. I put a resistor into the harness where the factory egt was, and no CEL in 5k miles. I do have a completely stock exhaust from the turbo back.