gillyz20let

what turbo do i need to use to obtain 380-400hp an a 2003 uk sti?
what other mods will i need to obtain these figures?
will a ecutek map cope with these mods?

gillyz20let

anyone?
been doing some hunting on the net and found a andy forest 20g td05???
full 3" exhaust system
uprated boost control solinoid or ebc
uprated fuel pump
anything else??? will turbo fit directly onto std flange, intake and oil feeds ect???
seen somewhere that 00> sti injectors and i.c are easyly ok for 400+hp??

any help?

RLE

iTrader: (2)

20G turbo may just make 400bhp with supporting mods. 380 - 390 is more realistic.

I went for an 18G in the end and sold the 20G. Better mid range than the 20 although the latter will have better top end/ higher power figures on the rollers.

Ecutek map will be fine. My 53 plate sti was mapped by Bob Rawle and consists of:

3" decat exhaust
RCM downpipe
Harvey Smith up pipe and ported headers (wrapped)
Fuel pump
Andy Forrest 18G turbo
80mm RCM K&N filter
Uprated spark plugs
3 port boost solenoid

Running 1.45 boost and delta dash shows car running approx 390bhp/ 350lbs torque. Lag not an issue, mid range punch awesome. Standard sti injectors and top mount still in situ.

Next mods would be FMIC but decided too much outlay for very small gains.

HTH

MartynJ

An Ecutek map will cope with those mods...
Turbo wise it is hard to advise against the TD05/20g but as another option Turbo Technics are close to releasing their range of hybrids for Subaru's...The T38 version will make 400 with ease and should also be available with a roller bearing option...This will mate with the standard uppipe and downpipe but can produce upto 500bhp depending on supporting modifications....

WRX_Rich

iTrader: (5)

for a true 400 bhp turbo you could look at the md321h or a rcm gt35 p18

gillyz20let

cheers guys.

just want the biggest bang for the buck really, dont really want to be stripping the engine just yet.

the stock lumps good for a claimed 400hp so the 18g with the mods RLE listed should do me fine.

ta.