I had a custom catback exhaust built for my 99 986. Removed that HUGE exhaust and had a new free flowing catback system custom done. Sounds GREAT. But in less than 3 miles the CEL came on. never touched 02 censors. any ideas?
You don't have to get those exact ones, there are cheaper versions all over ebay and Summit Racing. I myself used the FVD because I ordered thier muffler as well at that time.