Are you looking for cat delete/test pipes to eliminate the primary cats, or the Y-pipe catted bypass pipe? I have a hand-polished OEM Y-pipe bypass I could be convinced to sell if that's what you're looking for... cats are intact and ~30k miles on it. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Image Unavailable, Please Login #4 is the part I offered. When the bypass valve opens under high engine load, the exhaust has 4 paths to escape rather than just 2. #21 is the primary catalyst, and the primary exhaust path under low loads. Several companies offer 'test pipes' which are straight pipes without catalysts. Let me know which one you're talking about.
