I took out 2 of the resonators, the large on in the fender and the one closest to the firewall today and i am very surprised at the difference it made. The engine is much louder along with the intake and the stock exhaust has a much deeper tone. I didnt take the last small one out becuase i just bought the jwt pop chrager and that all comes out anyways. i just took the big one out becuase i wanted to see what kind of a difference there is by taking them out on the stock intake. If anyone is looking to clean up the mess of tubes of your stock intake system and make it a little louder i would deff say go and do this (its really easy). I dont know if there is any performance increase though..