Custom bent exhaust system

[DevilInsidetunin at aol.com]

Hey All,
     I'm up to get a custom exhaust system from the cat back. I want to 
either just use the cat as a silencer or install a Leistritz S/S rear muffler off 
my Jetta VR6 2.5". Now, What are the gains for going to 3" over going to 2.5" 
I'm have heard alot of things as the Stebro is a 3" for my car. Some people 
recommend 2.5" cat back. I've heard a worked 2.22 turbo with no cat and just a 
muffler and it's wonderful. This car has the basic mods. done to it..

200 TQ 10V K26

ECU Chip
WG Spring
Swissed box and K&N with inner fender mod