400 whp @ 12 psi with stock engine. What do I need?
 

Could someone tell me what turbo I need to run 400 whp with only 12 psi boost on a stock engine? Is it possible?

Thanks.

Gene

Re: 400 whp @ 12 psi with stock engine. What do I need?
 

a miracle. :)

I seriously don't think that is possible. I think Ernie T pulled around 380 RWHP @12psi and that is with a street ported engine. Also, 12psi is really not a lot of boost for a single turbo.

Yes, I wanted to keep the boost low as possible since I want to road race the car. Do you know what turbo setup Ernie T has?

Goto the australian forum (on this site) and you'll see streeter selling his setup for $1500 (that's oz dollars). This setup got over 350rwhp out of a stock 13Bt (except obviously extra injectors etc)...

How about a T04 62-1?
 

I think (although I could well be wrong ;) ) that you could probably make about 350 rwhp with a T04 62-1 P trim compressor and maybe a 1.15 A/R housing at 10-12lbs of boost, but that would probably have quite a bit of lag.
Nitrous :D

Good luck!,
Manolis

12psi on a stock engine? Add 150 shot, and maybe you'll get that HP.

Not gonna happen.


If you're wanting to keep the boost low, you need to have a setup where you are able to realize the the efficiency range of your turbo(s).

If road race means track racing, I would recommend the sequential setup with the mods listed below.

If road race means street racing, I would say a small single.

I would recommend these modifications: intake, full exhaust, pulleys, BOV, Greddy elbow, intercooler, upgraded clutch, lightened flywheel, upgraded fuel pump and regulator, upgraded ignition, upgraded radiator, computer and 1200cc secondaries. I think I got everything :)

Either way you go, you are going to have to run 16-17 psi for 400 rwhp. Without NOS assistance, less boost than this will be less HP.

With this on sequential setup and proper tuning, you should be able to see 350-375 rwhp.

With this setup on a small single, you should be able to see upwards to 400 rwhp.

Hope this helps.