On a stock turbo, with the mods in my Signature plus the following:

Snow meth kit
Cams (GSC S1?)
Walboro pump
bigger injectors
Forge Recirc BOV

running 27-29 psi?

 

anyone?

 

What kind of fuel and what king of a dyno?

 

if ur stock turbo u should go with gsc stage 1 cams

 

27-29 psi won't matter much where '400whp' is concerned because the turbo won't be holding anywhere near that at the power peak.

Your goal is possible, but you didn't disclose the size of the meth nozzle, and of course, much of it depends on the tune. Also, some adjustment to the cam settings could help somewhat, but we're probably talking nickels and dimes with the stock turbo.

 

yes, has been done quite a few times on a Dynojet. Theres a member on here (forget name) putting down 405whp/415wtq on a IX with stock turbo and meth.

BTW, make that S1 cams - S2's are for GT35r and larger turbos...

 

Ok, so S1 cams, check, didn't know that about them.

As far as nozzle goes, no idea.

I'd be running 93 octane.

 

possibly

 

You should be there with those mods. I put down 401whp and 417tq with the mods in my sig. on 100 octane. You don't need to get bigger injectors though. Doesn't make sense unless you're going with a bigger turbo.

 

I'm not too sure on 93 octane.

 

He said methanol too.