I got mine on Ebay, and it has the deep tone, but it has another weird sound too. It's kind of like wind blowing(that' the only way I know how to describe it). Other than that, my turbo spools up right away and you can hear the turbo much better than the factory exhaust. As far as power, I put it on before the injectors, and bottom end seemed to be stronger. After I put the injectors in, it ran like a scalded ape. :--) I really like it. I think I paid like $435. 00 w/shipping and everything. It took me about 4 hrs. to install myself because, the old exhaust wanted to give me a hard time about coming off. I think it really got used to being there. :-laf