Acutally i left the resonators on. They looked like a bitch to take off so i just left them. I haven't heard any other NA exhausts so i can't compare, but it's just a good quality sound. I gained 5 rwhp by just taking off the muffler. Putting those pipes on added back pressure. It only cost $85 and that's just b/c this guy (meineke) was the only one out of 4 shops that would do it. The car runs really good w/ this set up, and since it was so cheap, i'm very happy. Try downloading it again, it comes up real fast for me. Just don't use quicktime.