I have Tom's Full Turbo Kit..[thumb]

The Downpipe is 2.5"
The Flexpipe is Factory so i'm guessing 2.25"
The Cat-back is FocusSport - Sport editon the website said is a 2.25"

Now..

Should i put a 3" flexpipe or go with a 2.5" flexpipe? [???:)]
or Should i change the whole thing to 3"

I don't think i might change the Cat-back yet.. since is 1 year old and is the ceramic coated one from focussport. but if i have to, I'm just have to save up.

PRTurboZX3

i would ask tom's opinion. I'm sure he has an idea of what works best with his system

Change the whole thing to 3 inch , its the only way to go

Faster spool up and better TQ

Tom