ksa74f

Wider rear track i know,but what else ?

s70rjw

iTrader: (2)

DCCD
Different geometry setup
different heater switches

SpecDscooby

Heater controls on the interior.....round dials rather than twister handles....dccd diff on sti.....much more to follow im sure

Moley

iTrader: (9)

114 PCD (110 on earlier models)

wrx sti ppp

what they said. i have an 05 sti and have been thinking about changing the wheels...that wider track certainly limits opportunities for bargains on ebay though!

sean95wrx

my missus' 05 STi hasn't got dccd

TonyBurns

iTrader: (3)

It will be a euro import then, UK cars had the "optional extra" as a standard feature, hence they went up 1k as that was the cost of the dccd!

Tony

sean95wrx

well done mr burns, it came through malta

LUCKO

iTrader: (3)

is o5 uk blob sti a twin scroll?

Maz

iTrader: (34)

Nope just the JDMs.

LUCKO

iTrader: (3)

i purchased wisely then

johnfelstead

100mm PCD on the earlier, and it's 114.3mm PCD on the widetrack.

johnfelstead

MY05 DCCD-A comes with extra sensors, it now uses a yaw sensor and steering wheel position sensor on top of the previous set.
8" x 17" wheels, previous are 7.5" x 17"

JDM differences

MY05 Blobeye MY04 Blobeye

Rear bodywork width 1738mm 1725mm
Wheelbase 2540mm 2525mm
Rear track 1515mm 1505mm
Front body overhang 920mm 930mm
Rear body overhang 955mm 960mm
Steering wheel to rear bulkhead 1502mm 1510mm
Steering wheel to brake pedal 660mm 628mm
Conrod weight 578g 549g
Flywheel weight 8284g 8439g
Air charge temp sensor in plenum Fitted Not Fitted
Minimum Homologated weight 1271kg 1293kg
Min distance hub to wheel arch F333mm R277mm F350mm R315mm
Head/Bore Comb chamber min vol 67.8cm3 66.6cm3
Head Combustion chamber min vol 48.5cm3 48.5cm3
Max compression ratio 8.3:1 8.5:1
Downpipe flange diameter 130x82mm 110x64mm
Front LSD Helical Suretrack
Rear LSD Plated Plated
Front ARB 20mm 19mm
Wheel size 17x8 17x7.5

daz1968

iTrader: (13)

The doorcards are trimmed on the armrest and dash and centre console tidied up a bit, also spec c suspension geometry larger wheel bearings improved dccd with extra sensors rear wheelarch trims and different rear bumper to suit, on jdm I believe engine is as spec c with better cams not sure about uk engines though as I went jdm

johnfelstead

Engine internals are the same for the Spec C and JDM STi on MY04 and MY05 and onwards, turbo is different with the spec c using a VF36 (roller bearing) and the JDM STi uisng a VF37 (sleave bearing).

The MY04 had 0.1mm less valve clearance on the exhaust than the MY05, the MY04 has 0.05mm less lift on the exhaust valve than the MY05.

TimH

iTrader: (11)

Oh...so if there's an intake temp sensor on a JDM '05 STi, do I not need to fit the aftermarket one in the FMIC pipework now I've gone Syvecs?

johnfelstead

Nope, just connect into the plenum mounted sensor, as long as the after market ECU is compatible with it.

The sensor isn't used by the stock ECU as standard, it was put there for GroupN rules, to make use of it with the stock ECU you simple swap a couple of wires at the ECU connector, then remap the ECU using the GroupN coding. I havn't used that as the GroupN coding doesnt have active knock correction, which is important when using fuel souced at the road side rather than from a controlled batch, as the GroupN cars get to use.

TimH

iTrader: (11)

Can you point me in it's general direction please? Is it part of the sensor "collection" that's part of the throttle body assembly (TPS sensor is there, I think) - I don't recall seeing any unused sensors in/on the plenum?

johnfelstead

It's mounted seperately under the central area of the plenum, it's wired up, wires are available at the ECU connector.

TimH

iTrader: (11)

Thanks John

TimH

iTrader: (11)

Hmm - can't see under plenum very easily, so difficult to trace the wiring

Do you happen to have the pinout for an '05 JDM STi ECU so I can locate the pins both for that sensor and the temp sensor that's in the MAF? I've searched on here, and elsewhere to no avail.

TimH

iTrader: (11)

Still not managed to find the pin for the plenum temp sensor at the ecu

I thought I had, but now realise I was looking at the ECU pinout of an '05 normally aspirated model not an STi

So if anyone happens to know the pinout it would be appreciated