642 Horsepower STI Wows The Domestic Crowd

SPEC SHEET

VEHICLE
Year / Make / Model: 2007 Subaru Impreza STi
Chassis Code: GDB
Shift RPM: 8,500 RPM
Redline RPM: 8,500 RPM
Peak Boost: 27 psi
Fuel: 93 Octane / VP Racing Q16

ENGINE
Engine Code: EJ257
Displacement (cc): 2,457cc
Bore & Stroke (mm): 99.5mm x 79mm
Peak Horsepower (@ RPM): 642.1 whp @ 7,000 RPM
Peak Torque (@ RPM): 481.9 lb-ft @ 7,000 RPM
Dyno Type: Land and Sea Dynomite Dynamometer
Engine Builder: Phil Grabow
Machine Work: Honed Cylinders
Pistons/Compression Ratio: Cosworth 8.5:1 Compression Pistons
Connecting Rods / Crank: Cosworth Forged Connecting Rods
Camshafts: Cosworth S2 High lift camshafts – KK3766
Valves / Springs / Retainers: Cosworth Dual Valve Springs, +1mm Stainless-
steel Intake Valves, Titanium Retainers
Cylinder Head Modifications: Cosworth CNC-Ported Cylinder Heads
Cylinder Head Gasket: Cosworth Head Gaskets
Intake Manifold / Throttle Body: Cosworth Intake Manifold (Rotated)
Head / Main Studs: Cosworth H11 Tool Steel Head Studs
Air Induction System: Perrin Big MAF Intake
K&N Cone Filter
Fuel Injectors: Bosch EV1 1,600 cc/min Injectors (x4)
Fuel Delivery System: Walbro GSS 342 Fuel Pumps (x2)
Full Blown Dual In-Tank Fuel Pump Hanger
Aeromotive Eliminator Fuel Pump, Top-feed fuel
rails, adjustable fuel pressure regulator
Engine Management System: Hydra 2.6 ECU
Engine Management Tuner: Phil Grabow
Boost Controller: Turbosmart E-Boost Controller
Exhaust Manifold: GTSPEC Manifold, Rotated V-band Up pipe
Exhaust System / Downpipe: Element Tuning 3-inch Cat-back Exhaust
Wastegate: TiAL Sport 44mm Wastegate
Blow-Off Valve: TiAL Sport Blow Off Valve
Intercooler: Precision Turbo & Engine FMIC
Cooling System: Visteon Radiator with dual shrouded fans
Oil System: Process West Oil Cooler Kit
Performance Electronics: Blitz FATT Turbo Timer
HKS FT-3 Turbo Timer Harness
Orange Electric TPMS
Pioneer AVIC D2 With Navigation
& Back Up Camera

TURBOCHARGER
Turbocharger: Element Tuning GT75
Frame: GT35R
Compressor Wheel Specs: 82mm Major, 61.4mm Inducer
Turbine Wheel Specs: 68mm Major
Turbine Housing: TiAL Sport 1.03 A/R V-band Housing

CHASSIS/DRIVELINE
Springs, F&R (Make & Rate): TEIN 9 kgf/mm & 6 kgf/mm Springs
Shocks, F&R (Make & Rate): TEIN Flex Adjustable Dampers
Additional Suspension Components: TEIN EDFC Controller
Cusco Aluminum Front & Rear Strut Tower Bars
Kartboy Front & Rear End links
Cobb Tuning Adjustable Sway-Bar Mounts
GTSPEC 3-Piece Sub-frame Kit
GTSPEC Differential Mount Tie Brace
Clutch / Flywheel: Exedy Triple-Disc Cerametallic Clutch
Axles / Driveshaft: DSS 1000 HP Level 5 Axle/Hub Kit
ACPT Carbon Fiber Driveshaft
Wheels (Make, Size & Offset): SSR Type F Wheels 18×9.5-inch (F&R)
Tires (Make & Size): Dunlop Direzzas 265/35R18 (F&R)
Brake Calipers (F&R): Brembo
Brake Rotors (Diameter, F&R): DBA 5000 Series 2-piece Rotors (F)
DBA 4000 Series Rotors (R)
Brake Pads (Front & Rear): Hawk HPS
Brake Lines: Goodridge Stainless-steel Braided Lines

INTERIOR
Roll Bar / Cage: AutoPower Roll bar
Seats: Corbeau CR1 Micro-suede Seats
Harnesses: Takata 4-point Harnesses
Gauges: DEFI Center Gauge Pod, DEFI BF Series Amber EGT
Fuel Pressure, Oil Temp & Pressure, Water Temp,
Boost

EXTERIOR
Bumpers (Front & Rear): Chargespeed Type-2
Hood: Seibon Carbon fiber with vents, Sparco pins
Rear Diffuser: Chargespeed Carbon-fiber
Etc: Roof Spoiler