Dtowns320

What do I need to get my wrx sti 1999 running around 400bhp.

2.1Stroker on semi closed deck ej207
12mm oil pump conversion
sti yellow injectors
walbro 255 pump
vrf28 turbo
eculabs ecu
excedy stage 2 clutch
standard 5 speed sti 5 speed box

running around 320bhp 324lb ft

Thanks

yabbadoo4

iTrader: (8)

turbo and injectors will get you there. 20g or sc40 or sc42 even md321h and prob 650 cc injectors. the gearbox is your weak point and def wont last at that power and torque. ideally you need a 6 speed.

TypeR99

iTrader: (2)

5 speed wont hold that power, well not for long anyway.

740cc/800cc injectors
MD321, SC40/42, 20g, FP Green turbo
Decent FMIC
Decent induction kit
Mafless (not sure how good/bad the eculabs is)
3" decat system
Either standard ported, rcm, gt spec, harvey headers

Lower spec parts like a 2.5" exhaust, 550cc injectors + fuel pressure regulator etc will get it there but if you want to make 400+ comfortably you want to over engineer it.

As said, gearbox is the weak point and wont last, 6 speed box/diff is what most, including me, run reliably.

ianbott

Have you already selected the 12mm oil pump? It's massive overkill. 12mm only really needed when running dual AVCS. I'd be tempted to swap for an 11mm as the 12mm will be on the pressure relief all the time.

Dtowns320

The car was like this when I bought it thanks for the info.

Dtowns320

[QUOTE=TypeR99;11868208]5 speed wont hold that power, well not for long anyway.

740cc/800cc injectors
MD321, SC40/42, 20g, FP Green turbo
Decent FMIC
Decent induction kit
Mafless (not sure how good/bad the eculabs is)
3" decat system
Either standard ported, rcm, gt spec, harvey headers

Lower spec parts like a 2.5" exhaust, 550cc injectors + fuel pressure regulator etc will get it there but if you want to make 400+ comfortably you want to over engineer it.


Thanks for the info better get saving for the 6 speed box.