Basically just wanted to know the best way to achieve 360bhp ish on a 2003 sti.

Pretty sure its got ppp, it has the prodrive back box and feels around 300 ish

cheers

 

Walbro fuel pump, panel air filter, uprated injectors, front mount intercooler then Ecutek remap should see WRX's safely off without breaking the bank.

 

Full de-cat exhaust, decent panel filter, 3 port boost solenoid, fuel pump and a decent mapping session. Probably won't quite see 360 but won't be far off buddy.
I'm sure one of the experts will confirm this.

 

You won't need injectors or front mount.

 

agreed - tmic and injectors are good for 400-420bhp

but you will be pushing the vf35 turbo pretty hard at 360bhp...

 

So i could see it with a decent exhaust, intake and fuel pump

that sound good mate

When does the ppp fuel pump max out then??

 

Hi matey with your turbo you will never see 360bhp,you will need at least VF43-VF48 or TD05-18G or 20G
But as above 3port boost solenoid and Full decated exhaust,your walbro pump will be OK,but you will see,new cost around £70-£100,panel filter.
If you are going on track,i would recommend FMIC and Oil cooler,Cosworth Baffled Sump will be good addition.
For remap,you have two option like OS or EcuTek,OS is cheaper option with same results and some mappers are mobile.

Jura

 

Hence a big front mount, bigger power with less boost!

 

Ah right i see what you mean

i should of stuck with fords at least i know about them

 

all you need is a exhaust, panal filter , up rated fuel pump
and a remap

buy it all 2nd hand
should cost £500 ish all in

also buy a ecu thats already been ecutekd then get it tweeked

stu

 

You are smoking or taking pills?

 

i am looking at going to 400bhp in the future. I already have uprated fuelpump and 3 port boost solenoid. my plans are:

3" exhaust - £400
SC40 turbo - £1000
Fuel pressure regulator - £100
Remap - £600

based on the fact that will get me to 400bhp, you can see that getting you up to 360bhp will not require a new fmic or injectors

 

He's on something mate, read his WRX vs STI thread

 

You will be OK with standard injectors,but mostly your injectors will be 100% IDC,i would recommend ad to your list FPR.


Jura

 

Good job I didn't mention the dirty nitrous

 

I may as well go for 400 then

i know i'll want more at 360

 

In this apologizes to RS_Matt.



Jura

 

400 is a good number, because the airbox, tmic, and injectors are rated at around 420bhp, and internals around 450bhp.

400bhp is nice and safe without spending mega-bucks!!!

 

newbie sorry mate

 

OP, it's really only the turbo holding you back. Do the bits I said in my earlier post and then save a bit more for a turbo.

 

FPR is Fuel pressure regulator.
Have look at this chart on this website
http://www.scoobypedia.co.uk/index.p...rFromInjectors


Jura

 

all he means mate is that at around 400bhp, the standard STI pink injectors will be running close to 100% capacity, so add a fuel pressure regulator (FPR) to take some strain off them. if you look at my original post with a break down of parts and costs though, you will see the FPR on there for around £100...

 

already checked the parts section cheers

 

FPR - Got it

 

Sorry for misreading your post


Jura

 

no worries buddy. i did go back and check it, thought i had missed it out!!

 

Just be mindful that the turbo will be insanely hot and top mount cooking like an egg. Dangerous for the engine. I know a few peeps running TMIC on 400+ and they always let the engine cool down after a few mins blasting.

Front mount and uprated injectors bring power, sustained sprinting and bags of insurance for little outlay

 

Yes as above STi injectors,FMIC and turbos which i suggest before will be optimum.
Because if you have just WRX,for full potential of STi TMIC you will need also undertray and STi scoop,due this i would suggest FMIC is cheaper option and will keep your engine in safe.

Jura

 

FMIC is a must for me because its only gonna get used for hard driving every couple of weeks, i've priced up a hybrid one from someone of here

 

its a sti mate