Originally Posted by nsquared
Can the HFC DP be matted w/ the stock exhaust? If so, how much noticeable sound increase will there be?
I think they said it's an OEM swap, so to speak, so should be doable. If you get the high flow cat, you'll realize the most gains with this mod (usually)...you'll hear it, usually, more in the cabin, but like a sexy prrrr (my experience with DP's in other cars).