Thread: What size Intercooler and Piping?

Starting to plan everything but not sure oh what size piping and intercooler to use.
Setup:
t25 u13
370cc injectors @ 4bar
n60 maf
2.5"downpipe

That is what I'm going to be using. I found this intercooler and thinking around this size is good enough.
http://cgi.ebay.com/ebaymotors/CXRacing-Intercooler-Front-Mount-27x6x2-5-Civic-Golf_W0QQcmdZViewItemQQcategoryZ33742QQihZ015QQitemZ250236374963QQrdZ1QQsspagenameZWDVW

But more curious on the inlet/outlet size should I use. Is 2.5" to big?
Also what size piping, I read that bigger is not necessarily better, especially on t25's. Saying this, I can get any size piping I want because my brother does fabricating work. So what would you suggest size I run, and I'll will eventually be getting a T28 setup.

2" hot, 2.5" cold. Also still good to use on a T28/GT28RS. As far as intercooler, look for something by 3" in thickness.

why 2" on the hot side? and why 3" on the intercooler?

The air coming out of the turbo is hot(compressed)therefor you want to run a smaller pipe to keep velocity. Once it passed threw the intercooler, it gets more dense. Reason for running a larger cold pipe. I say run 3" for better cooling, a intercooler works just like a radiator, minus the fans. The thicker the less chances of it getting heat soaked.

Ok that makes sense lol

What about running a 3" pipe on the cold side and the intake would there be any benefit from that?

Really you would be better to run 2in on both sides, and get an intercooler like this http://cgi.ebay.com/ebaymotors/CXRacing-Intercooler-23-x11-x3-Turbo-ECLIPSE-TALON-DSM_W0QQcmdZViewItemQQcategoryZ33602QQihZ014QQitemZ330227422715#ebayphotohosting
or one with the one endtank facing the other way http://cgi.ebay.com/ebaymotors/CXRacing-Intercooler-26x10x3-Mustang-Fox-Body-SN-body_W0QQcmdZViewItemQQcategoryZ33742QQihZ014QQitemZ330222606341 if you are going to go with an ebay core (See how it has short passageways that is good long passageways like the one you found slow air flow and are harder for air to flow through).

im running 2" hot side, 2.5" coldside

my intercooler has 2.5" inlets, its 2.5"thick, 5.5" tall, and 27" long.

I'd get the OEM Evo FMIC.
bigger and cheaper

yeah i thought about that but there more like $120