Berk has this 3″ diameter cat back dual exhaust system that I picked up to get a few more horses out of the MR2.  The exhaust looks really nicely packaged.

I was looking to get the exhaust put in by a shop instead of having to do it myself.  The message boards, and the MR2 BGB has some general guidelines that when I read it thought it would be fairly easy

First impressions of the exhaust:

Noise:  It’s definately louder than the stock exhaust system.  At idle it has a nice low humm.  At half throttle when cruising it’s noticeably louder, but not to the point where you can’t have a normal conversation with the passenger.  Gets pretty loud when you stomp on at wide open throttle.

Performance:  I can feel it’s more responsive and feel it pull much quicker.  Haven’t had much time to really put the exhaust through its paces.  But from the manufacturer’s website, it says HP power gains from 20-50WHP vs stock.

Appearance:  Very nice fit and appearance.  Tucks in nicely and the exhaust tips are polished.