My ears are thanking me... I had the reso delete with the X-Pipe installed about 2 months ago and has others have noted, I noticed a loss in that "punch" and thought it was a trade for the rumble... well my ears have had it... I reinstalled the suitcase and left the reso off and love the purr I have now. Anywhoos... anyone need an X-Pipe...got one for cheap!!