the trouble is, it gets more and more expensive the nearer you get to 200bhp 🙁
I've just replaced my exhaust from the flexi back, just to get a few extra bhp :shock:
Fitted a 200 cell sports cat + flexi and a modified magnex cat back, now the entire exhaust is 2.5" (I removed the 2" flange and welded in a 2.5" flange where the magnex bolts to the cat)
Quite surprised that the engine revs better, but I did have the standard 2" cat + flexi and 2" Janspeed exhaust + 2.25 Irmscher backbox
Probably cheaper to fit a z2.0let engine than get 200 bhp from the z2.2se, but I've gone too far to swap engines now 😃