Agreed. Only by changing to CAT delete pipes gives the loudest sound. No matter which muffler you use, there is not going to be as loud as going CAT-less.
By the way, Eisenmann makes Inconel muffler that cost 5,355 Euros. That makes M Performance Exhaust a bargain.
Inconel material is used for F1 and race car exhaust. Ever wonder why they don't use titanium instead?
Check out:
http://www.eisenmann-sportauspuff.de...onel-Titan.php
Quote: "
Titanium was then - Inconel Alloy is now!"