Quote Originally Posted by Tie-355 View Post
But the question i have is If the car should sound the way it does when reved to around 5000 rpm.
As the above question asks,
To me it sounds like a little back pressure as it comes off throttle, it doesn't mean a bad thing. However, my old ears hear a slight rattle at reversion. Thus the suggestion to check for a loose baffle and/or small exhaust leak, both of which are easy to do.
Not trying to be funny, certainly no disrespect intended, and it may just be harmonics as suggested...