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2007 Subaru Impreza WRX STI - Homebrewed Champion

By Joey Leh, Photography by Henry Z. Dekuyper

2007 Subaru
Impreza WRX STI
Engine
Engine Code:EJ257
Type: 2,457cc, flat-four, aluminum block and heads, AVCS variable valve timing, turbocharged and intercooled
Internal Modifications: Cosworth pistons, piston rings, forged connecting rods, oiling system, camshafts (280 intake/282 exhaust), valves, CNC-machined cylinder heads, Setrab oil cooler
External Modifications: Full Race exhaust manifold, front mount intercooler, intercooler piping, downpipe, TiAL external wastegate, Garrett GT40R turbo, custom air intake, exhaust
Engine Management Modifications: 1,600cc/min fuel injectors, Bosch fuel pump, Motec ECU fuel surge tank

Drivetrain
Layout: Longitudinal front engine, all-wheel drive
Drivetrain Modifications: Driveshaft Shop axles, Tilton triple-plate clutch

Suspension
Front: Ohlins coilovers, M1 subframe brace, alignment and setup by M-Workz
Rear: Ohlins coilovers

Brakes
Front: Brembo GTR monoblock eight-piston brake calipers, 14-inch two-piece rotors, pads, Goodridge stainless steel braided brake lines, Motul RBF600
Rear: Brembo GTR monoblock four-piston brake calipers, 12.9-inch two-piece rotors, pads, Goodridge stainless steel braided brake lines, Motul RBF600

External
Wheels: 18x10.5, Volk Racing TE37
Tires: 275/35/18, Nitto NT01
Body: APR widebody kit (fenders, quarter panels and bumpers), rear carbon-fiber wing
Interior: Racetech seats, custom suede interior, Sabelt harnesses, Defi gauges

By Joey Leh
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