Header Wrap on Test Pipes

Originally Posted by LostSol

So I really dont like my CNT test pipes, the poor build quality shows as they hiss worse than any test pipe ive ever heard and sound "tinny" far too often. Im gonna pick up another set from a better company and was thinking about wrapping them in header wrap to reduce unwanted noise and hiss further.

Has anyone ever wrapped resonated test pipes? What was your impression? How much header wrap did you need?