I was in Greenwood,SC last week and had the chance to smoke a ps at the stop lights. This guys truck sounded nice and made some smoke when he layed on it. But it was no match for the CUMMINS :-laf Now I don't have too much done to my truck but it does run good. I have a Bully Dog power pup (on perf. mode) 5" exh. , tq tube and AFE 7.