I had a local shop remove the exhaust resonator and weld in a straight pipe. The sound difference was minimal but good enough. I have done cat back on so many different vehicles and felt as though it was not worth the money. 50.00 mod and results are better sound. I see a few have done magnaflow and different mufflers but I felt they would all be to loud for me. I just have the rear stock muffler and it does sound better.