fmic piping ?
 

I was looking to install a fmic on my 1j sc and was wondering what size piping would work the best. I have a greddy boost controller and plan on running 14psi.

2.5 inch maybe 2.

Na 2.5 should be good

I'm running 2" before the intercooler and a little section right after the intercooler, and then 3" to the TB. I'm using 3" core intercooler.

Why the different sizes? or was it just stuff you pieced together. Like get a ebay set of piping. Really cheap just as good aluminum is aluminum. And weld as much of it as you can so you dont have to worry about couplings poping of and crap

I got 3" piping, with a 3" core IC, so I don't have to upgrade when I go single.

Thnx for the help ill let you guys know how it goes.

Starting with 2" pipe is the same size as the turbo compressor outlet. It's then connected by a 2" x 3" hose adapter to match with the 3" intercooler core. After the intercooler is the same hose adapter to match the look in the front. I didn't want a 2" on one side and 3" on the other side. The hose adapter lenght is only 3". Then for a short runner of 2", it'll become a long runner of 3" straight to the TB. I'm running that way with no problem. I don't use many couplings. The pipes are smooth and mostly welded together and won't break. Unless the turbo compressor outlet is 3" and matches with the 3" intercooler, then some pipe adapters gotta be in the way.

Sounds pretty efffctive

I've got 2.5 pre I/C and 3 post I/C

2.5 pre IC is ideal, helps cut down a tiny bit on turbo lag, 3" to throttle body is ideal....once the air goes through the IC you want as much air as possible to go to your TB....i have 3" all the way, from turbo to tb....if i was you i would weld all your piping together as much as possible....
http://i106.photobucket.com/albums/m...s2/build20.jpg
http://i106.photobucket.com/albums/m...s2/build19.jpg
http://i106.photobucket.com/albums/m...s2/build18.jpg

Nice...My ic looks very similar like yours. I made 2 brackets on the ic top and bolted the ic to the rail just like yours, and 2 more bottom brackets bolted to the radiator frame. However, I moved the ic another 2" toward the radiator. There're still a lot of room for heat dissipation. My set up is actually on the SC400.

How do you weld aluminum?

I'd suggest having a professional do it. My roommate had a shop called Vettes & Performance do his aluminum welding and it looked AMAZING.

mines steel...not aluminum.....polished steel