I have a MY03 Sti and have put a sc38 billet on it, full exhaust, remapped, uprated clutch and brakes. Spec C struts and eibach springs. Its running around 360.
Whats the next step I can take now?

 

Honda diesel ?

 

If fuel keeps going up I may be thinking about it.

 

A FMIC may gain you 10 bhp and some more torque ( if mapped ! ) sadly the next step would be bigger injectors and turbo...

IMHO

dunx

P.S. You could map for methanol ?

 

Ported headers and matched uppipe will gain you a bit more or you could look at GT2 Spec with special 3 bolt uppipe. Both these mods will make the engine more efficient.

 

Cheers Harvey might be in touch soon

 

Induction, fmic, fuel injectors, fuel pump..

 

Harvey what would that lot cost me and what effect will it have on the car?

Cheers

 

The ported header option, exchange with purpose designed uppipe, stainless steel, new studs and all DEI heat wrapped will be £369 plus delivery or we fit for a fixed £75.
Tubular GT2 with special three bolt uppipe, new studs etc, all DEI heat wrapped is £669 plus delivery or fixed price fitting £75.
Your best choice will depend on your future intentions.
Dropme an e-mail per profile if you need more info.