JDM vs EUDM sti
 

which is faster point to point?

V8 JDM sti twin scroll vs V8 EUDM single scroll sti both had intake/exhaust/ecutek?

JDM

JDM

is the jdm turbo engine safe to run on 1.1 bar boost with spiking to 1.3. this is tune with ecutek

how does the jdm sti 2.0 compare with eudm sti 2.5L?

I'm not knowledgeable about boost figures and remaps, but the JDM spec EJ20 revs higher to 8k and through use of equal length headers with twin scroll turbo has more torque which is available lower down the rev range and for longer.

JDM, it delivers its power far more progressivly, its smoother, has a faster steering rack, dccd etc, its just more of a focused driving machine :D

Tony:D

JDM

My standard sti7 was just as quick if not slightly quicker than my brothers sti8 ppp

how much can these jdm stock turbo/engine takes?

The JDM sti also revs to 8k where as the UK model only does 7krpm :)

Stock turbos can run around 360bhp, stock engines, 420+ the new litchfield type 20 is running 400bhp :)

Tony:)

Scoobytyson is running close to 500bhp with NOS on a standard engine ?

grd have a uk sti running 500+ on a standard engine

I would have more faith in a jdm engine, :)

are the two engines that different then?

The two engines are totaly different, the JDM one will be miles ahaed of the euro spec one and stronger parts

when i bought my jdm was told they have different internals from the uk spec but this is my 1st subaru so not sure how much is true

7.5K :thumb:

which?:)

my redline starts at 8k on my sti7

UK STI's rev to 7.5K before hitting the limiter.

i believe the jdm sti v8 doesnt have a TGV delete? better cylinder head port as stated by japanese tuner tomei

TOMEI TECHNICAL REPORT | SUBARU EJ25

I thought all STi's came without the TGV valves. The VF36 turbo can handle 1.5-1.6 peak tailing to 1.1-1.2 at the red line.

if i am not mistaken euro/usdm version did came with it due to tougher emission standards

03 UK STi limit is 7500
06 UK STi limit is 6900 but has tons more torque. My money would be on the UK car on a point to point, real world test.

anyone has any idea how to adapt the jdm head to the 2.5 sti block? is it a straight bolt on affair? how about the intake manifold?

jdm Hawk
 

Ok, went to look at the car yesterday, Nice clean car. As stated above the advert was a bit vague.
Imported from Japan July 2019 so clean under body
greddy slam panel.
upgraded air intake under bonnet scoop
Has a spec C air turbo fitted,
Whiteline rear anti roll bar and adjustable drop links. Thats all is could see from the ground.

There was a decat downpipe and new oem oil pump included in sale as a new timing belt kit was going to be fitted.
Sound guy, well into he's subarus too like the rest of us.

Left a deposit and will be back next week when i get the funds.

Plan to do:
* Soften the coilovers
* Full timing belt kit
* remap for Irish fuel
* fit a front splitter
* fit a nice guage cluster

i think you have put this in the wrong thread ,the last post was ten years ago,2009