[quote=“layzie,post:37,topic:24524"”]
it has nothing to do with the size of the exhaust. if it has a res and a muffler he will be fine
[/quote]
of the 2.5in systems he was considering they would both be loud. unless u have one made up at a shop with a res its going to be loud.
my system is 3in with a small res and a striaght thru muffler, and its apexi, and was loud as shit on the na 240 is was on b4 mine. when he swapped in a 2.5 with a no name muffler it was quieter.