does anyone know how much bhp gain wil get by fitting front mount intercooler and exhaust headers inducton kit and ecu chip and remap .

what size turbo is it safe to go up to on a standard sti head and block

 

for what model? i assumed yours but your spec already has these??

 

not sure what my bhp is trying to get rough idea i needs a rolling road printout ! have not fitted bigger turbo yet . would like to upgrade fuel system first but not sure which way to do this

 

sorry forgot to say 94 sti

 

ah ok, sorry bud
i would have thought 310-320bhp would be a good estimate for the spec youve got (maybe a little more depending on what boost youre running)
the standard injectors will take 330ish (or up to 350 with an adjustable fpr) but upgrading to 550s will allow around the 400bhp mark
a wrx block is good for about 350bhp before it would be worth uprating the pistons but iirc the stis have forged internals from the factory so if thats the case then you would probaly benefit from a TD05 20G. with all this in place you would need to replace the ecu as the earlier models cant be remapped (and dont forget the clutch/gearbox)
what sort of power are you aiming for?

 

around the 400 mark my engine has upgraded pistons ect ,whats fpr? and last owner informed me the ecu has been upgrded /replaced. is it easy to upgrade the fuel system whats needed, im a vehicle tech on cars so got plenty of mechanical experiance but none on scoobys there in a league of there own

 

i can get to the 400 mark without fitting bigger turbo ?

 

1. Your engine spec is a little vague, i.e. forged internals ?
2. Yes a bigger turbo is needed to reach 400 bhp, it would help to identify yours exactly.
3. bigger injectors, up-graded fuel pump, ecu replacement/re-map depends on model fitted.
4. Gearbox and clutch will be pushed way beyond their safe limits unless you are really kind to the car.

HTH

DunxC

P.S. Silly option is a 100 bhp shot of nitrous.....

 

yeh thats the word it does have forged internals will these take a turbo up grade i think this is going to cost me some dollar

 

good reply duncan, we all need frank advice not 20 replys

jim

 

the road to 400 is a very hard and expensive im not talking 5 grand you need to look at transmission cost which can cost anything from 2500-4500 fitted alone.theres ppg or sti 6 speeds.

my advice to you get the car remapped with stage 1 and see how that goes for now 330 is fun road car trust me it would be pointless goin front mount for now, stick with the top mount for now. if your after street cred then go for a front mount but make sure you gt some one repitble to fit it and im not talking about a mate.

i hope that can be a bit of help

mus

 

Chris, are you sure your STi has forged internals?! .

I read somewhere (I think it was from Brian Long's 'Impreza' book) that forged internals for the Classic STi were actually an option from new, so not every one is necessarily going to have them. Even then, I think it was only the pistons, and not the rods, that were offered as a forged option.

I may be wrong but I'm sure I read it from a reputable source. One person who'll invariably know, will be APIDavid...

 

fuel pressure regulator