My cat is about rusted threw on the top side(kinda weird but ok) of it im getting that famous burble that toyota have when they have exhaust leaks and its my work car its getting a little annoying now... my friend works at his dad exhaust shop he mention that i could try the old spark plug fouler trick. i told him i would let him know if it would trip the light if i tried that... has anyone tried this im not trying to get 1000hp off its just a regular corolla getting me from point a to point b im just not trying to spend 180 bucks right now since im kinda tight on money.

thanks in advance.