Quote:
Originally Posted by PrematureApex
On an N55 with secondary, cats, I'd agree. But on one without any cats, it's a different ballgame.
There are a lot of N55 guys who swap in N55 or xdrive catted mids because the sound/drone is a bit too much for them fully catless.
Perhaps the M2 muffler does a better job quieting it down...
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That's great info to know as well. Every engine and exhaust system is different. I'm wondering with the ability to open and close flaps in the muffler ends up quieting things down enough. So as long as Alex doesn't remove the secondary cats, he should be more than fine with a ymmv full catless.