TOMEI undertook a role of all about the engine, the chassis was by Cusco and the aero dynamics was by VOLTEX.
The vehicle competed in USA, Japan and Australia, beat all the other Impreza in all the time attack series.


DATA
Code
TOMEI CUSCO IMPREZA
Model
SUBARU IMPREZA GDB EJ25
Driver
EIJI YAMADA
SPEC
Engine
SUBARU EJ25
TOMEI GENESIS Prototype TA
Displacement
2469cc
Bore × Stroke
ø99.75×79.0mm
Maximum Power
495PS/6800rpm
Maximum Torque
66.0kgm/4400rpm
Compression
8.5:1
Boost
1.6kg/cm2
ENGINE PARTS
Piston
 
TOMEI FORGED (φ99.75)
Crank Shaft TOMEI COMPETITION MODEL Stroke: 79.0mm
Connecting Rod TOMEI H-BEAM 130.5mm
Camshaft TOMEI PONCAM IN250°-9.6 EX256° -9.8
Head Gasket TOMEI METAL HEAD GASKETø101.2 t=1.0mm
Valve Spring TOMEI
Valve Spring Retainer TOMEI Titanium
Valve Guide TOMEI PHOSPHORUS BRONZE (PBB)
Valve seat ring TOMEI BERY-RING
Valve Lifter STD
Head Bolt TOMEI STUD TYPE
Crank Cap Bolt TOMEI STUD TYPE
Timing Belt TOMEI
Timing Belt Guide TOMEI
Oil Pan Baffle Plate TOMEI
Oil Pan STD
Oil Pump STD
Water Pump STD
Turbine Garrett GT3076R
Engine Control MOTEC
Fuel Pump BOSCH
Injector TOMEI 850cc
Exhaust Manifold TOMEI EXPREME 4-2-1 Equal Length Single Scroll
Front Pipe
TOMEI Custom Made
CHASSIS PARTS
Clutch
 
CUSCO Twin Metal
Transmission
CUSCO 6Speed Dog Box
LSD
CUSCO Type-RS (F)1WAY (R)1.5WAY
Center diff COSCO DCCD Active Center Diff System
Suspension  
 Spring/Shock CUSCO ZERO3X Damping Force 24-Step Adjustable, Separate Tank Type)
 Stabilizer CUSCO
 Arm CUSCO
Traling Arm / Lateral Link / Front Lower Arm / Pillow Arm
 Strut Tower Bar CUSCO
 Power Brace CUSCO
 Lower Arm Bar CUSCO
Tire
YOKOHAMA ADVAN A048 265/35 R18
Wheel
RAYS TE27 9.5J R18 /Offset +22
Brake Pad
PFC
GrandEffectr
VOLTEX
Roll Cage SAFETY21 16-Point
Seat
BRIDE GARDIS III
Seat Belt
TAKATA
Others LSD

RESULT HISTORY
DATA
2008
 
EVENT NAME
TIME
RECORD
11/12
Super Lap Battle in Buttonwillow CA, USA
1'44"372
Won the 1st prize
2009
12/9
REV Super Battle in Tsukuba Circuit 2000
56"667
Won the 3rd prize
2010
05/20-22
World Time Attack Challenge in Sydney Australia
1'31"901
Won the 3rd prize