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To help promote Subaru's in-house performance tuning department, the automaker build a custom WRX STI using only parts from the Subaru Performance Tuning (SPT) and STI catalogs. Unveiled at the 2009 SEMA Show in Las Vegas, the SPT WRX STI makes 315-hp (up from 305-hp), thanks to an SPT exhaust system. Otherwise, the factory turbocharged 2.5-liter flat-four remains untouched.
Under the hood, there's an SPT turbo heat shield and a selection of shiny bits, including a billet oil cap and battery hold down. Outside, the car also gets some extra style with a new front lip spoiler and exhaust finishers. Oh, and let's not forget the 19×8.5-inch Prodrive GT2 wheels in Glitter Gold.
Wrapped in wear Michelin Pilot Sport rubber to help the car's cornering abilities, the STI also gets some assistance from STI performance springs, an SPT strut tower brace and lower chassis brace.
Inside, the car is mostly stock with an added SPT boost gauge, a media hub audio system, an STI shift knob and some all-weather floor mats.
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More: SEMA 2009: Subaru Performace Tuning WRX STI Unveiled in Vegas on AutoGuide.com