Thread: Gti-r t28 with 370's on VET

i'm about to purchase a gti-r t28 for my VET.. currently running an avenir setup with z32 maf and walbro 255 @ 4bar and calum basic. wondering how things are goin to be with my 370cc injectors and the t28.. at what psi will i max them out? im not looking to go more than 10 psi ever.. any help would be great asap

You will need more injectors, even @ 4bar. Get some 555's and be done with it.

No less then a 550.

Stratton.

I would do exactly as others have mentioned, get some 555's or larger. You will be maxing out the 370's way to quickly with a t28 and a ve.

It you back off 1-2psi you will be safe but with the stock compression and if you run the stock GTiR manifold its kind of asking for trouble. 480 ccs at least and try to find a JGY manifold.

Basically I agree with the others but with the caveat that I think you could get away with it. Not that I think you should do it.

If you have any sort of monitoring for duty cycle, you could keep them from maxing out, but you might have to leave some power on the table. I did 259whp @ 15lbs on a T25/28; a T28 would probably make a little more power which would be really close to maxing them out.

I'm at 282whp on 370's at 4bar.

Being that you have a vet I would go with bigger injectors.

370's will max out quickly on a DET or DE, let alone a VE; even at 4 bar. If your are trying to find some cheap sidefeeds, get some Subaru STi 520cc injectors.

I agree. I did 260whp@10psi on a UK motor with a T28 setup. So the VE will be another 0.4 compression, slightly larger cams with a much better flowing head.

Back-pressure will be very high with a stock manifold and egts should be high.

More fuel is a start but there are other things to make the setup reliable that will help like porting the manifold and dialing out some overlap with cam gears. Dyno time and tuning etc. Even the slight elevation in Stottsdale is a consideration.