i had to swop from the milltek 8v 2.25" system to a jetex 2". and guess what, bum on seat, it felt more responsive.
the milltek was embarrassing loud. i mean stupid. however asthetically, it was beautiful. very well made. fit perfectly.
im so much more happier with the jetex. alot quieter, apart when at wot.then its just purposeful.
the fit is only as good as the garage who put it on. i used midland vw. and i have no banging/knocking. fitt and forget