i am gettin a custon catback done and i was wondering what size piping i should go with, i am undecided on 2 1/4" or 2 1/2", give me some input please

 

i think i would go with 2 1/4

 

u think it would be better for back pressure to go with 2 1/4?

 

whats ur whp goal?

 

not exactly sure, im not lookin to throw a turbo in my car im just tryin to do basic stuff, i havent had the car for too long i only have intake and headers for motor work so i'm not really sure what my goal is for whp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00B18slammed &raquo;</TD></TR><TR><TD CLASS="quote">not exactly sure, im not lookin to throw a turbo in my car im just tryin to do basic stuff, i havent had the car for too long i only have intake and headers for motor work so i'm not really sure what my goal is for whp</TD></TR></TABLE>

If you're going turbo you may want to wait on that, you're already ahead of yourself. A header wasn't necessary because you'll be buying a turbo manifold. Depending on what psi you have the turbo at, you may want 2 1/2" all the way up to 3" exhaust. I would plan out a goal and head for it, there are just way too many options for turbo and performance from it, so I would try to develop what you want to do to the car, then get it taken care of.

The only reason I say this is I was at the same point when I first bought my car. I almost redid the entire exhaust and a few other things, but I would've regretted it because it didn't match my current setup. If you have the money, then by all means do it, but just doing the exhaust now is really not practical without goals.

Edit:
I also noticed you said custom catback, which isn't going to make too much of a difference. Figure out more about your turbo specs, at least what psi you would like to run, and plan from there. For example, 7-8 psi, 2 1/2" exhaust from the DOWNPIPE back. This way there is no restrictive flow the whole way. Just my .02

 

i dont want to put a turbo in my car, i'm lookin to do all motor work, its and everyday car, plus i dont have the money for a turbo

 

If you are going all-motor, I would say stick with the 2-1/4, unless you have some crazy setup planned

 

nah no crazy setup, just lookin to save money, i didnt wanna buy a whole catback exhaust, i already have a muffler so i was just lookin to go with bigger piping

 

2 1/4 piping should be sufficient for your needs.

 

alright bro thanx u made up my mind, good lookin out everyone

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00B18slammed &raquo;</TD></TR><TR><TD CLASS="quote">alright bro thanx u made up my mind, good lookin out everyone</TD></TR></TABLE>

Haha I apologized, I read turbo and skipped the not. That what I get for posting while at work. 2 1/4" sounds good for all motor. My bad.