Exhaust size...
 

Im looking to get a turbo back exhaust system and was wondering whats the Pros and Cons of going with a 3.5" or 4" exhaust system over a 3" exhaust system. Because I like the sound of the 4" over 3".

rebuilt 7mgte with forged internals, p&P head, Brian Crower Stage 2 cams. soon to be either 61-t turbo or 71mm turbo. other than that stock

now make that your sig. =)

:werd: k now made

Blasphemy!!!! Just kidding. You spelled "Supra" wrong in your sig.

I would just stick with the 3" piping.. Any bigger and you will have problems sourcing mufflers without having to reduce it into it.. Im running 3" on my MKII N/A and it is loud as hell.. Plus i dont see any benifit in exhaust flow after a 3" unless your running a huge race only car or a cummins,lol..

Agreed. I think 3" is fine....anything bigger is overkill unless you're running some serious HP numbers.

this was the exhaust I was thinking of going with...

http://www.extremeturbosystems.com/T...duct_info.html

well with the new turbo Ima be getting I was gonna be running around 20psi

christ. you should be trying to run 500 hp or better with 20psi..
f it. if you got the cash go bigger. if you can find 4" the whole way out.

"note" I did not look at his current specs. I am not saying running 20psi is warranted for his current build. just stating my opinion.