Just got my T3 installed today so still a T-Noob.
Anyways, is it ok if I use a 2.5" pipe from the t3 downpipe all the way to the exhaust, but uses the stock cat?(for now cuz of money problem) Would it cause any problems, power loss, or damage to the engine or turbo?

 

anyone?

 

should be fine. just might hurt spool up time.

 

it'll be fine. for the most part bigger is better, but you are not going to hurt anything.

 

what car and mods?? if you can get rid of cat or get a hi flow cat, it will help your spool up for real

http://www.cardomain.com/id/boostlee

 

It wont hurt motor just power and spool, what size exhuast? So you have 2.5 downpipe to stock cat, to aftermarket exhuast?

 

sounds like you have what most have. Get the 3" stuff when you have more money.

 

LS motor (stock internal). with T3 @ 7psi.
My downpipe is 2.5 and that's the reason why I want to go 2.5 all the way back to the exhaust. But then after reading some threads on here, I'm debating whether to go 2.5 or 3".

 

A friend is selling a brand new 2.5" Tsudo catback for a good price. Should this be fine on my turbo setup?