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Old 02-10-2020, 06:38 AM   #1
dr20t
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Member#: 311246
Join Date: Feb 2012
Default DR20Tís MY00 Australian GC8 WRX Build - POZ35D

Hi All,

Been around here for a while - previously had the version 10 GRB spec c ej207 in an MY04 Australian delivered Liberty (Legacy) GT.

Sold that a couple of years back and moved away from Subarus for a while. Had an Audi s3 with stage 2 mods etc but found that really mundane and boring to be honest. Was lucky enough to get a new work car so found this little beauty as a weekend car.

Decided to start a build thread for my new project - itís an Australian delivered MY00 WRX. Have owned it for about 7 months.

This is how I bought her:













What it came with:

OEM EJ205 with BOV and 3Ē TBE

Unknown coilovers with BC springs 10kg Front 8kg rear (I think theyíre the maxspeeding rods nasty ones)

Replica recaro seats

Rays engineering Sti RS Zero (S201) 17x7.5 forged monoblock wheels with RE003 tyres all round

Rebuilt 5 speed box with short shifter and hd exedy clutch

Dba T2ís all round and I think bendix pads

Carbon fibre sti front strut brace and white line rear strut bar

JDM sti tailights

JDM Sti cluster

Sound system (alpine amp and 12Ē sub with four kicker speakers and pioneer headunit with Bluetooth)

Various autometer gauges

Well it didnít take long for the bug to bite again and in the first three weeks of ownership I purchased the following for her:

JDM V8 EJ207 Sti complete engine
Aus spec ej207 ecu and transponder etc
2002 full wiring harness for wiring merge job
PPG loaded 5 speed (straight cut 1/2 and helical 3/4 - synchro not dog engagement)
VF48 (will throw twin scroll housing on this to use with my twin scroll jdm headers) - ended up running the vf37 noting theyíre internally exactly the same with a differnt housing obviously for twin scroll
Arp 2000 head studs
2015 STi OEM TMIC
Mishimoto silicon kit
Custom CAI with AEM dryflow filter in inner guard
GFB Respons adjustable BOV
AP Suretrac r160 LSD diff (need to change pinion and crown to suit 3.54 ratio)
Id1300x injectors
Walbro 460
Raceworks Surge tank setup and AN fittings
Radium fuel rail kit and torque solutions fittings and lines
Process West splitter for gc8 (to suit wider tmic)
Twin scroll bell mouth dump pipe starter (will weld to my existing 3Ē dumpĒ
Various new gaskets etc to suit above
Killer B sump baffle
Pierburg 3 port bcs
DBA T3 front rotors
Winmax w5 front pads
Dot 5.1 fluid
Kap industries fire extinguisher mount
Genuine JDM V5 Type R alloy control arms
JDM GC8 Sti quick steering rack
New MCA Reds valved / sprung for my setup

And most importantly - new ledís for the interior...

Also bought a set of 22b pedals which are in pretty good condition (have the wider bottom accelerator pedal for heel / toe)

Plan is to use this as a weekend car with 4-6 track days a year

Have installed all of the above and loaded the latest Carberry 16 bit rom on there (4.2) - have been tuning the rom and have recently rescaled the maf accurately - itís now making 342g/second and 3.91 g/rev load - which is pretty cool for a vf37 e85 setup.

I have also purchased a genuine Garrett GTX2867 Gen 2 which I will be putting a kinugawa twin scroll housing on to suit the stock jdm twin scroll headers (stock location) - waiting on the housing to become available again so this is on hold until then.





Any thoughts and advice welcome

Cheers

Mick
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Last edited by dr20t; 02-15-2020 at 11:33 PM.
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Old 02-10-2020, 10:21 AM   #2
CEEBEE
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Member#: 420458
Join Date: May 2015
Location: Australia
Vehicle:
07 WRX STI
Urban Grey

Default

Awesome build mate!
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Old 02-10-2020, 10:21 AM   #3
CEEBEE
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Member#: 420458
Join Date: May 2015
Location: Australia
Vehicle:
07 WRX STI
Urban Grey

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More photo's please...
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Old 02-10-2020, 06:51 PM   #4
dr20t
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Member#: 311246
Join Date: Feb 2012
Default DR20Tís MY00 Australian GC8 WRX Build - POZ35D

Thanks mate.

Here are some more pics. The engine bay pic was a couple of weeks ago so some things have been cleaned up and changed since then

Also - didnít mention but I also bought another gc8 in world rally blue. This had a blown engine so i threw my stock ej205 motor from the silver one into this and sheís running great.

Bonus was the genuine sti lip and fog light covers, jdm sti type r 4.44 5 speed and rear diff and a few other little bits and bobs. This was is going to be a keeper for storage.
















Last edited by dr20t; 02-15-2020 at 11:30 PM.
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Old 02-14-2020, 12:39 AM   #5
dr20t
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Member#: 311246
Join Date: Feb 2012
Default

So Iíve scaled my maf pretty close with corrections / learning now down to under 3% either way

Iíve got it setup to switch from map to SD at 10psi boost (24.7psia) with 85% blending from 0psi boost (14.7psia)

Logged a second gear pull onto freeway ramp today and the car jumped a little after hitting a slight bump - revs jumped from 7300 to 7645 in next log line, and airflow g/s went from 348g/s to 379.

Can someone help me explain what I perceive to be an inaccurate airflow reading seeing as my maf is scaled?

Or is perhaps my maf scaling out at higher voltage but Iím not seeing it because my final fuel base is changing due to the switch to SD at 10psi boost?

If my last comment / question is confirmed, this would explain the high reading right?

Canít see how a vf37 at 22psi tapering to 18.5 can be making that sort of hp

Mick
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Old 02-15-2020, 07:33 PM   #6
Fierysun
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Member#: 82745
Join Date: Mar 2005
Chapter/Region: SCIC
Location: So Cal
Vehicle:
2005 Subaru STI
2003 EJ207 S204 Wagon

Default

You should fix your links so they show the pic in your thread, so no one has to click any of the links.
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Old 02-15-2020, 08:05 PM   #7
dr20t
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Member#: 311246
Join Date: Feb 2012
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I did it on the app so itís showing for me on here in the thread. Do I just add image tags to them?
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Old 02-16-2020, 02:59 PM   #8
fitzgerald_moto
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Member#: 500292
Join Date: Apr 2019
Default GC8 Doors

Hey mate,

Beautiful ride and work.

Can anyone advise if GC8 sedan front doors also be used on a 2.5 coupe? Picking up some front doors from a sedan and want to make sure they're can swap out without issue.
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Old 02-16-2020, 03:36 PM   #9
Aczwild
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Member#: 71721
Join Date: Oct 2004
Chapter/Region: NESIC
Location: Charlotte, NC
Vehicle:
'98 RS (Racecar)
'13 Sierra, '16 BMW 328i

Default DR20Tís MY00 Australian GC8 WRX Build - POZ35D

Quote:
Originally Posted by fitzgerald_moto View Post
Hey mate,



Beautiful ride and work.



Can anyone advise if GC8 sedan front doors also be used on a 2.5 coupe? Picking up some front doors from a sedan and want to make sure they're can swap out without issue.


No, the coupe and sedan doors are different in length.

To the OP, nice little old school Impreza. These cars really are the best and it looks like you have a real nice starting point for an awesome car long term.
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Old 02-16-2020, 08:16 PM   #10
dr20t
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Member#: 311246
Join Date: Feb 2012
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Quote:
Originally Posted by fitzgerald_moto View Post
Hey mate,



Beautiful ride and work.



Can anyone advise if GC8 sedan front doors also be used on a 2.5 coupe? Picking up some front doors from a sedan and want to make sure they're can swap out without issue.


Thanks mate.

Yes as stated coupe and sedan door differnt lengths.

You lucky bastards in the US got the 2.5rs two door

A 2 door was only released as a v5 sti in Australia - 300 of them released.

These fetch anywhere from $45,000 to $100,000 now in Australia depending on condition and originality!

Mick
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