S3TH

iTrader: (2)

Right been told the standard turbo on my STi 4 will be at full flow at 330/40 bhp. As i was originally aiming for 360bhp with supporting modes, hyperflow TMIC, Decat, Headers, apexi fc, Just thinking to make it worthwhile i need a turbo that can produce more power.

Am i right in saying 400bhp is the max for standard internals? Thus 370/80 with proper cooling/mapping would be a safe level?

I need a turbo that bolts straight on and does not take forever to spool up.

Suggestions please.

Thanks.

S3TH

iTrader: (2)

LOL i just read a post further down and answered my own question. looks like the TD05/06 20G turbo will be the best option.

RoRu

I like a few other people on here have recently upgraded to the 20G, and haven' got a bad word to say about it, like yourself i have an Sti 4 and although it has more lag than the VF24 it replaced it not that noticable after you get used to it, but if you want that kind of power theres allways a down side.

Andy.

S3TH

iTrader: (2)

Hi m8, looks like your pushing out some good power, what mods do you have?

RoRu

Roger Clarke rebuild 6k ago,
Hks headers
Magnex u/p
Hks d/p
Hks hiper
Hybrid FMIC
Forge recirc
Power enterprises 550's (std reg)
Large Green cotton filter on custom inlet tract (no MAF)
Custom (home made) cold air shield
Samco turbo inlet hose
TD05 20G (Mr F)
Link ecu (BRD)
Apexi AVC-r (setup by Bob)
KnockLink
Blah
Blah
Blah

And i dare say there's more i've missed.

Andy

S3TH

iTrader: (2)

nice spec, Id love to go for a rebuild but cant afford it at the moment, my car has done 60k, hope it holds together when it pushed 380 bhp lol.

madou

http://www.boostplanet.com/compressorflow.htm

TD05H-18G ? From findings so far on straight Optimax with all supporting modifications is does seem that c. 10 bhp per lb/min flow is approximately correct

Jay m A

iTrader: (2)

It might be worth having a look at the TD05-18g too, there was a thread started by Andy F about 10 days ago with pics etc

Jay m A

iTrader: (2)

Ah, madou beat me to it

carlos_hiraoka

with good engine heads, 8000rpm limit, FMIC, header and good octane fuel ..... my bet is on the 18g