im thinking of running 3'' kteller catback exhaust and running a blitz nur spec axle back, the axleback has a 3'' to 2.5in reducer on it, will the reducer effect anything like performance and sound? or no.. and if so how much would it effect anything i dont wanna cut off the reducer it would ruin the exhaust and if the perfromnce drop would be minimul then that would be ok any thoughts?

 

bottlenecks are horrible for flow, I'd definitely reconfigure that so it's equal diameter all the way back.

 

i know there really isnt a way to reconfigure the exhaust tho, without cutting off the reducer, and its such a nice looking axleback i would hate to cut it up and make it look like crap