Intercooler piping size for my 93t setup?

[Decimate]

Hi there.

Please bear with me, I am aware there are similar threads but I would love some advice from the experts for my specific set-up regarding intercooler piping size.

I'm looking at either 2.5 or 3" hot & cold size piping for a CC GSR, 4g93t as follows:

4" intake to turbo with Evo AFM
TD05 (haven't worked out if it's small or big 16g yet, but assume big)
3" Exhaust straight from the turbo
Mild port + Polish of cylinder head
Evo Throttle body, port matched stock manifold
Adj Cam Gears
Evo 510 injectors & Evo 5 pump

I will be running 1bar boost

So would there be any disadvantages to going to 3" piping or would it simply be too laggy? I don't want to be revving it right out all the time or waiting ages for it to spool up. But in saying that would 3" make more power than 2.5"? I basically want decent response for a track car.

Any help would be appreciated thanks!

Tim

 

[GSRWRC]

2" from turbo to i/c. 2.5" from i/c to throttle will be plenty.

 

[EVOCPE]

That's the same setup I had with my 4g63 engine, 2" hot side. 2.5" cold side

Excellent response

 

[Decimate]

That's the same setup I had with my 4g63 engine, 2" hot side. 2.5" cold side

Excellent response

Thanks guys. I'm looking at pre-fabricated kits so I'll go for 2.5" maximum then unless I can get around the budget restrictions and get something custom done.

 

[EVOCPE]

Even using a standard evo 1-3 setup is fine with the 93t and won't bust a hole in your wallet

 

[Lister]

The std e1-3 setup imo would be preferable to a larger configuration. As it would keep the gas velocity higher, and not be any restriction. While keeping the wallet smiling.

 

[Qik-1.8]

hi guys sorry to bring up a old thread
but the gsr engine (1.8ltr) is almost ready to go in and im wondering what would be the best size to run hot and cold side i have a 30-76R want to make 400hp?
also on the intercooler what size outlet 2.5 or 3 inch
regards

 

[86psi]

Every intercooler setup I've ever made up I always go on the theory that what ever size throttle body you have use that for all your piping. There is no point goin bigger than what your throttle body is and no point goin smaller then you should have even flow all the way through