Originally Posted by NYBladeZ

I don't know about keeping the stock cats bro. Besides the fact that they are extremely restrictive and a set of test pipes doesn't cost much more especially when you've already invested so much. I remember seeing one vid on here of a member who had bad cats and trust me there was more than just "dust" coming out of the rear pipes. I personally would be terrified, one small to medium chunk of the cat filler will erase all your hard work and cost you a new turbo.