as far as I know they dont make a mandrel bent pipe for our cars, that is.. just the tube. Instead they make you pay $250 for a filter you dont need. I can't say anything about that, cos I dont have one can't find one either. But.. since I added my KKM my throttle response and overall performance including gas mileage has gone on a downward spyral, I'm at half a tank now and I only have about 108 miles on my mileage counter for this tank. My filter is in the fender, as best as it can be. I talked to the dealership about the slowness, they told me the kkm was TAKING an estimated 10-15hp from my engine because "the computer can't handle it" I agree about sound. The kkm made my exhaust sound deeper and perhaps a bit more aggressive. I have a flowmaster 50 on there, OEM cats and silencers (kind of illegal to remove those and extremley expensive to replace with high perf.) dual in/out muffler 2" pipes all the way out and I didn't notice any gain in perf. with this either. All it did was change my sound.