Open Class Autotech STi The Hulk


Returning in 2013 is the Autotech built STi WRX known as the Hulk. This is a scratch built car starting with a highly sought after Prodrive prepared shell powered by a 450kw 2.6 litre boxer engine.

The car was originally destined for a full aero makeover to run in Pro Class but with the change of ruleset for 2013 the team found the car fit the new Open Class rules perfectly as it sits and certainly should be capable of running at the front of the pack.

While longtime stalwart and WTAC veteran,  Jason Wright has been heavily involved in the build and testing of this car the team have also been in talks with several other Pro drivers. At this time the driver is yet to be confirmed.


Autotech Engineering
Class: Open
Car builder/tuner: Autotech Engineering / Spiro Papadimatos
Team Website:

2005 Subaru Pro-Drive STi, WRC S-10
Engine: Autotech 2.6L Flat Four
Gearbox: Subaru 6-Speed
Suspension:  Cusco 03X
Brakes: Project Mu
Wheels:  Volk TE37
Tyres: Advan AO50
Electronics: Haltech
Aero: Autotech


ENGINE: Time Attack Spec 2.5L Block – Autotech Prepared and Strengthened EJ25, with Autotech Spec 2.5L crank, rod and piston combination camshafts. Autotech Special Grind – BIG Valves – Stainless and Inconel with Autotech spec double valve springs and retainers. Carter Lift Pump feeding ProcessWest Swirl Pot and then taken to the front by 2 x Bosch 044 MototSport Pumps. At the front we have ProcessWest Fuel rails and Power Flow fuel pressure regulator.

Billet ProcessWest Intake Manifold, reverse mount with ProcessWest mini alternator and CNC relocation bracket turbo – Garrett GT35RX.  Intercooler, radiator and oil coolers by ProcessWest. Custom exhaust system by Autotech Engineering, Ignition and Data Logging by Haltech, custom wiring by Autotech and Pro-Wire Harmonic Balancer and Under Drive Pulleys by Ross Tuff Bond Balancers.


DRIVELINE: Subaru S-206, 6 speed Syncro box, built by Diff Technics of Sydney Clutch – Extreme Performance Twin Center Diff and Control – Modified S-206, plated Center Diff, controlled by an Adrian Voss diff controller. Front and Rear Diff – Cusco 1.5 Way MZ Plated Front, Cusco, 2 way MZ Plated rear, built By Diff Technics Sydney. All four axles are billet, custom length by Bosnjak Engineering in Sydney.

SUSPENSION: Coil-overs by Cusco Zero 3X supplied by 999 Automotive. Sway Bars by  Whiteline,  Cross members and control arms – TSSFAB Custom front and rear cross members and custom lower control arms front and rear. All with full spherical bearing upgrade. Front Hubs – LIC Motorsports front hubs. These feature adjustable roll center and bump steering adjustment.

BRAKES: Front – Project Mu 355mm SCR Pro-Floaters with Mu 4 Pot 4 Pad, Project Mu Billet Racing calipers & Pmu H16-03 pads Rear – PMu, 260mm, Custom Pro-Floaters, billet center hat, 2 Pot 2 pad Billet Racing calipers with PMu ceramic pads. Master Cylinder – OBP Pedal Box and cylinders from Racer Industries.

WHEELS and TYRES: Rays VOLK TE37SL 18*10.5 – Yokohama AO50 18*295

BODY, PAINT and INTERIOR: Porsche 911 GTS Green by Exclusive Body Werks. Graphics by Mark Daniels from Excite Signs Body Modifications.  APR Wide Body front bar and guards from Pro-Speed Racing, the rest of the body is all Pro-Drive.

PERFORMANCE: Power Output: 450kW at the wheels
Fastest Lap: 
1.35 EC GP In Our Street Car – Aiming for 1.31’s or less in HULK (Sydney Motorsport Park – NSW)


The Autotech Time Attack Racing team has evolved from running successfully in CAMS NSW State and CAMS National level Supersprint competitions. They hold numerous CAMS lap records, 2 CAMS NSW State Championship Title wins and 2 CAMS National Championship Title wins.

Leveraging off their experience in building and running cars to dominate classes within the CAMS Supersprint Series, where they regularly feature as “Fastest Tin Top”, they target the annual pilgrimage to WTAC as an opportunity the show the world what can be achieve with the humble Subaru Impreza Platform.


Their best WTAC result to date is 3rd Outright in Open Class 2011. This impressive result was achieved in a street-registered CAMS SVD compliant, 2003 WRX STi, which was punching way above its weight against some much more fancied, highly modified and lightened competition.

Seeing the writing on the wall with the way other teams are modifying their cars to compete in the Open and Pro Classes of WTAC, the Autotech guys have decided to build the HULK and take full advantage of the WTAC rule book for a shot at the win in 2013 WTAC Open Class. 


Thanks to:
Autotech Engineering – (02) 98971378
ProcessWest Performance Aluminum
Liqui Molly Performance Lubricants
Haltech Engine Management
Ross Performance Parts, Ross Tuff Bond Balancers
Pro-Speed Racing, TSSFAB, Sexy Dry Carbon Parts and much more
Project Mu
Racer Industries
Nitto Engine Components
999 Automotive
Diff Centers & More
Exclusive Body Werks
Bosnjak Engineering
LIC Motorsports
Pedders Suspension
Cash Stop Finance
Xtreme Performance Clutch
Hi-Octane Performance Coatings
Advan Australia – Tyres Distributed by Gordon Levin Motor Sport Tyres
Excite Signs
Rising Sun Subaru
Diff Technics