2008 Subaru Impreza WRX STI

After over 8 years of ownership, it's time to finally list my pride and joy for sale. It barely gets driven and I'd prefer a build like this to be enjoyed and driven the way that it was designed to. The car has seen a handful of non competitive track days in the time I've owned it and a single timed day @ Phillip Island (Subinats), on the original EJ257 setup.

I'm the 2nd owner and took this car on in 2013 with some basic modifications already. I've played with various aspects of the setup, until 2017 when I was lucky enough to get my hands on an EJ207 W20C long motor (with thick liner bottom end and massive intake/exhaust ports on the heads). This motor was re-built with forged internals, balanced and installed in 2017 and has been super reliable ever since. Turbo-wise I settled on a custom setup based around the Borg Warner EFR7163 and an air-water intercooler.

I wanted a very quick, unique, reliable, daily-able car with a wide powerband and I feel that I've achieved that with this setup. It's still running the long-ratio 6MT so it hits 100Km/h at the top of 2nd gear (thanks to the 8250RPM redline).

I've tried to bring over as many of the JDM GRB STI components as possible - the car is running a JDM GRB STI "Quick Rack" (rebuilt in 2021) as well as the JDM (8000 RPM tachometer) dash cluster from the car the engine came out of. I also swapped the front seats to a set of Recaros that happen to be from a JDM GRB STI, so its basically a 2008 Spec R minus the wheels.

It was tuned in November of 2017 by GIR and is running a speed-density, flex-fuel tune. It made 301KW (E85) and 258KW (98 RON) and at the time had an issue with the original AWIC pump, so IATs were less than ideal. I have refined/simplified the AWIC setup since then and upgraded the pump. The setup is capable of more, but its already quite a handful so I haven't felt the need to run it up on the dyno again.

The car was the basis for a lot of the development work I did on the aijmod project (open-source flex fuel on the stock ECU) and is currently running a custom version, with custom CANBus integration work as well as some newer tweaks I've added. The Stock ECU is now pulling in Ethanol and Wideband information via CANBus, which has free'd up some of the other inputs (TGVs, Rear O2) for oil/fuel pressure and oil temperature. All of this is normalised and output back to the CANbus to feed a custom gauge setup that displays all the important stuff whilst looking very inconspicuous/OEM. The intent was to build a full race style dash cluster but I never quite got there.

Whilst the kilometers on the body are what you'd expect for a daily of this cars age (and it does show on some of the internal trim pieces etc), I've only put approximately 55,000KM on the engine. I recently had a panel shop PDR and correct some of the paint damage that the car has accumulated over its life (mainly shopping centre dints and stone chips) and also fit a new set of rims (SSR GTSV02).

I have the majority of the original parts, including the original EJ257 short block (Cosworth pistons, Cosworth rods, ARP case bolts, Cosworth oil pump) and cylinder heads and for the right price will be happy to let these go with the car.

Engine:
EJ207 W20C V10 "Thick Liner" Long Motor (Came out of JDM GRB STI @ 52203KM)
Long Block rebuilt/assembled by Phil Lowe
Rotating Assembly Balanced (including harmonic balancer + flywheel/clutch)
Competition Stage 2 Clutch/Flywheel
Forged Wossner K9223D050 EJ207 Pistons
Forged Cosworth H-Beam Rods
King Rod/Main Bearings
New EJ207 Crankshaft
ARP Custom Age 625+ Head Studs (11mm)
RCM Head Gaskets
Killer-B Oil Pickup
Killer-B Oil Windage Tray
Killer-B Oil Pan
Custom Air-Pump Delete
Kelford KVS109 Valve Springs
Heads reconditioned with rebuild

Ancilliaries:
Koyorad Double Pass Aluminum Radiator
Dual SaaS Closed Catch-Cans with 5/8", 3/4" plumbing, drain taps
Turbosmart OPR-40 Turbo supply oil pressure regulator

Intake:
Custom 3.0" alloy turbo inlet pipe
Modified Kobe 3.0" Intake/Airbox
Busted Finger Motorsports Ported TGV-Deletes
KsTech 3mm Phenolic Spacers
Killer-B Twist Mount Coolant Header Tank (V1)

Exhaust:
Custom Twist-Mount Up-Pipe/Down-Pipe (by Havoc Fabrication in 2017)
PSR/SSI Equal Length Headers, Wrapped with DEI Titanium Wrap
Hitech Mufflers 3.0” Catback Exhaust
AES Inline 3.0" Vacuum Actuated Butterfly Valve + 3-port solenoid for exhaust sound level control (installed by Auto Xcess)
Custom Air-Water Intercooler System:
Frozenboost Type 14 AWIC Core (modified with filler neck at high point and IAT sensor in end tank)
Frozenboost Type 101 Heat Exchanger/Radiator
Process West crash bar intercooler mounting bracket
Bosch Cobra AWIC Water Pump
Custom Charge Pipe
3/4" Insulated Lines
Custom expansion tank

Boost:
Borg Warner EFR7163 Single Scroll V-band Turbocharger
Turbosmart Internal Borg Warner Bypass Valve
Turbosmart Dual-Port Internal Wastegate Actuator
Turbosmart 4-port Boost Control Solenoid

Fueling:
ID1300 Injectors @ 58PSI Rail Pressure
Cosworth Fuel Rails
Pro-Flow Braided AN-6 Fuel Line and Fittings
MY09 WRX Send/Return Fuel Dampeners
MY07 WRX OEM Inline Fuel Filter
Turbosmart FPR-1200 Fuel Pressure Regulator
Walbro 525 Fuel Pump
Radium In-tank Fuel Pump Hanger

Engine Control/Electronics:
Stock ECU with custom aijmod 1.6 ROM (adds CANbus expansion for Lambda, ECA, gauge telemetry)
Speed Density tune by Warwick @ GIR
JDM GRB STI Gauge Cluster (8000 RPM redline)
Custom CANbus Exhaust Valve controller (control exhaust sound with SI-Drive, RPM and Throttle Position)
Custom CANbus Gauge with bright VFD screen showing Boost pressure, oil pressure, differential fuel pressure, lambda, coolant/oil/fuel temp, ethanol content)
Power-IO Solid State Relay for fuel pump control from ECU (adjustable fuel pump duty, similar to OEM so big pump doesn't run 100% at idle)
Panasonic EFB Battery
Continental Flex Fuel Sensor
Zeitronix ECA2 CANBus Ethanol Content Analyzer
Zeitronix ZT3 CANbus wideband
AEM 3.5 bar MAP sensor
Delphi IAT sensor
Holly Fuel Pressure sensor (TGV left input)
Bosch Oil pressure sensor/remote kit (TGV right input)
Delphi oil temperature sensor (Rear O2 input)

Stopping:
DBA4000 Slotted Rotors (Front)
DBA5000 2-Piece Slotted Rotors (Spare)
DBA T2 Slotted Rotors (Rear)
Winmax W3 Pads (Front)
Winmax W1 Pads (Rear)
Goodridge SS Lines (ADR Approved)

Wheels/Tyres:
SSR GTSV02 18 x 8.5, ET40 Glare Silver with Dunlop SP Sport
OEM 5-Spokes with PS4 (spare)

Steering/Suspension/Handling/Bushings/Mounts/Other:
Group-N Engine/Transmission Mounts
Whiteline Steering Rack Bushings
Perrin Pitch-Stopper
Whiteline Anti-Lift Kit
Whiteline 22mm Adjustable Rear Sway-Bar
Whiteline 24mm Adjustable Front Sway-Bar
AVO Front and Rear Adjustable end-links
JDM GRB STI "Quick" Steering Rack (Rebuilt in 2021)
2014 VA STI OEM Suspension (removed with only a few thousand km on car) - lowers car modestly with OEM ride quality

Other Modifications:
JDM GRB STI Recaro Spec-R Seats (reupholstered a couple of the bolsters)
Front-end Face Lift (2011+ WRX/STI), blanked out fog covers, new wheel arch liners
Perrin Radiator Shroud
Perrin Alternator Shroud
Process West EBCS Shroud
Ultrex Side Skirt Extensions
Ultrex Rear Diffuser
Cobb Gearknob
Pioneer AVIC F80 DAB Headunit
Alpine Type-R 12" Subwoofer/Pioneer Mono Block amplifier
Extendable Console Lid/arm rest
Blackvue 750 front/rear dash cam + Battery saver