Usdm Spec V Aus Spec My06sti - Perth-WRX.com

REXPRESS · #1 26-07-2006, 03:02 PM

Would like to know how the USDM model gets its extra power?
Also does anyone know if the gearing is the same as Aus Spec?

tuna · #2 26-07-2006, 03:21 PM

different ecu maps.
gearing afaik is the same, if not, its only 5th and 6th that would change slightly.

REXPRESS · #3 26-07-2006, 03:29 PM

Quote:

Originally Posted by tuna

different ecu maps.
gearing afaik is the same, if not, its only 5th and 6th that would change slightly.

So that's Same motor and internals?

tuna · #4 26-07-2006, 03:35 PM

unfortunatley.

Sethor · #5 26-07-2006, 03:40 PM

I am sure ADM & JDM use the same ratios the rest of the world gets taller ratios on 5 & 6

JMAX · #6 26-07-2006, 04:11 PM

USDM 2.5L STi uses a VF39 turbo

muggz · #7 26-07-2006, 05:39 PM

Quote:

Originally Posted by tuna

different ecu maps.
gearing afaik is the same, if not, its only 5th and 6th that would change slightly.

diff ecu map to run regular unleaded maybe? or is that a fallacy

Humie · #8 26-07-2006, 08:06 PM

Tuna could you please explain why you think the USDM internals are unfortunatly
the same and what do you mean by this comment as i have fitted a complete usdm
sti 2.5 to my car should i be worred about the strenght of this motor

chee · #9 26-07-2006, 08:12 PM

check nasioc for overall problems with pushing the 2.5

waxdass · #10 26-07-2006, 08:17 PM

you shouldnt be worried if your running stock boost or pushing mild power levels. Anything higher, they go boom unfortuantly after a period of time