24-12-2015, 11:03 PM
Pretty sure zx volcane passed 200bhp with a 2.5" and no issues iirc, and that's on a xud. It will be a slight restriction, but really shouldn't cause a problem. Look at exhausts on stock applications, there's various german diesels making over 200bhp on a sub-2.5" system with a load of restrictive filters and silencers in the way.