Got an EG with GSR swap and recently installed a BC Spec II exhaust with test pipe and I was wondering if it'd be too restrictive for boost. It's a fairly free-flowing exhaust (no muffler) but the piping is only 60mm, what's everyone think? Thanks.

 

thats kinda up to you, but you will always benefit from at least a 3inch

 

Its a nice NA exhaust but 3" theres so much of a huge difference. you can always fabricate a 3" DP and run an E cutout and then connect it to your BC2.

 

Damn good idea, thanks.

 

put a sound clip of ur bc2 exhaust. i love that exhaust