Greddy Plenum + Trust Throttle Body Questions

[Jamie88]

Hey guys,

To cut a long story short I'm building my motor in my 33 (rb25det) with forged internals, bit of head porting etc and amongst all the mods I have a genuine Greddy plenum on its way with a trust throttle body. Ok since I have not recieved it yet I am guessing the size of the throttle body is 90mm. Anyway my dilemma is I dont know how to go about the intercooler piping. As my intent was to upgrade my intercooler from my ebay front mount kit I wanted your opinions on which direction to follow. Remembering, bottom line is that my cooler I have now only has 2.5inch entry on either side. Obviosuly, for a minimal fix, the only cooler pipe that has to be tampered with is the one that joins the plenum , but I am seeking the best result so would like your opinions.

Should I:

- Use the Trust throttle body and use a silicon reducer down to my 2.5inch pipe size and keep the cooler setup the way it is?

- Get a throttle body adapter and use my standard t/b, sell the trust one and keep the cooler setup the way it is?

-Try and find a cooler kit with larger piping to suit the larger throttle body and forward facing plenum?

My biggest concern is not getting efficeincy out of my bigger t/b if my piping and cooler intake on that side is only 2.5 inch. Sorry about the big writeup, just wanting a bit of advice on which way to go.

Im also installing an afc neo, just to keep things running smoothly, does anyone think I will NEED a standalone ecu, or this should to the trick.

Appreciate your time!

Jamie

[Adriano]

Just get a 3 inch neck welded to your existing intercooler.

[Jamie88]

Just get a 3 inch neck welded to your existing intercooler.

I was considering that, but the cooler is terrible quality core....typical ebay crap. So if hks or Greddy already made a coolerkit with 3 inch on that side to suit. I was gonna look into that?

[Wheezy]

Trust do a GTR kit that suits the Greddy FF plenum on RB25\26, piping suits Q45 TB "FROM" the intercooler

[Jamie88]

Trust do a GTR kit that suits the Greddy FF plenum on RB25\26, piping suits Q45 TB "FROM" the intercooler

Is that both sides of the core or just the plenum side? I wasnt planning on touching the other side, but that I suppose defeats the purpose of having it bigger one one side as well. haha what am I to do people?!