Wearing those massive meats are custom 17x11, black three-piece CCW wheels. The exterior is finished off with an APR Performance aerodynamic widebody kit that includes front and rear bumpers, carbon fiber front wind splitter, 40 mm front and rear over-fenders, side skirts, and a huge carbon fiber rear wing. The cabin is outfitted with Recaro bucket seats, Willans safety harnesses and a TC Design roll bar. All the important stuff can be read on the Defi aftermarket gauges and heads-up display.
It took 18 months and a significant amount of effort to go from showroom stock to USCC-ready. Subarus haven't had much luck in the USCC to date, but this STI has far more than just simple bolt-ons. A built engine making some real power, a sorted suspension, and actual testing time in the autocross ranks could add up to a Subie all-rounder taking the overall win.
2006 Subaru Impreza WRX STIEngineEngine Code: EJ257Type: 2457cc flat four, DOHC, aluminum block and heads, turbocharged and intercooled, variable cam phasingInternal Modification: Mahle 8.5:1 forged pistons and rings, Pauter rods, ARP head bolts, Cometic head gaskets, ACL race bearingsExternal Modifications: Garrett GT3076R turbocharger, Cosworth cylinder heads, 1mm oversized valves, CNC port, Cosworth valve springs, titanium retainers, Perrin Performance front-mount intercooler, PDX Tuning custom piping, Perrin up-pipe, PDX downpipe, external wastegate, dry sump oil system w/custom PDX oil pan, PDX oil cooler kit, WRX cable throttle conversion, PDX modified reverse intake manifold, Perrin exhaust manifold, three-inch exhaust with high-flow catEngine Management Modifications: 805cc/min fuel injectors, Walbro fuel pump, Perrin fuel rails, NGK Iridium spark plugs, Autronic SM4 standalone ECU
DrivetrainLayout: Longitudinal front engine, all-wheel driveDrivetrain Modifications: Exedy Hyper Twin clutch, lightweight flywheel, pressure plate, PDX Tuning transmission cooler kit, Netronics center differential controller
SuspensionFront: Ohlins coilovers, camber plates, Hotchkis anti-roll barRear: Ohlins coilovers, Hotchkis anti-roll bar
BrakesFront: 14.6-in. slotted two-piece rotors, Stasis/Alcon four-piston fixed calipers, Pagid pads, Stasis stainless steel braided lines, Motul RBF600 fluidRear: Ferodo DS2500 pads, Stasis stainless steel braided lines, Motul RBF600 fluid
ExternalWheels: 17x11, CCW three-piece Classic BlackTires: 315/35/17, Kumho V700Body: APR Performance widebody kit, carbon fiber front wind splitter, front canards, rear wingInterior: Recaro racing seats, Willans harnesses, Defi HUD, boost gauge, Racepak G2X display, TC Design rollbar
This STI had to be well rounded for every event they intended to take part in, and still be unfailingly reliable for street driving.