Originally Posted by D-Lew
A de-cat for me is worth about a 10% increase. Granted I can get a high flow cat and it's nearly identical, but that's an extra $300 too. I would probably do that if I decide to finish my exhaust though.
Might as well keep the cat though. Personally the little performance increase doesn't justify possibly getting fined a lot of money. If it was my dedicated track car then I would do it, but since my baby is my daily as well, it's not worth it.