Some Welcomed Changes in Store for the 2009 WRX
FINALLY!! The WRX get's a boost!

August 13, 2008

SUBARU BOOSTS 2009 IMPREZA WRX TO 265 HORSEPOWER

[Official Subaru News Release]

Cherry Hill, NJ--Subaru is revving up performance and handling in its iconic All-Wheel Drive Impreza WRX sport compact for 2009, following the debut of the all-new model in 2008. Performance leaps to a higher level in the 2009 WRX thanks to a 265 horsepower turbocharged intercooled Boxer engine, retuned suspension and wider, lower-profile summer performance tires. WRX enthusiasts will quickly identify the 2009 models by the ST-type grille and standard Aero Package. The 2009 Impreza WRX comes with a 5-speed manual transmission.

New Impreza GT Model

Subaru is also introducing a new Impreza 2.5GT model for 2009, powered by a 224-horsepower turbocharged intercooled engine teamed to a standard 4-speed electronically controlled automatic transmission with SPORTSHIFT.

Both the more powerful WRX and the new 2.5GT are available as 4-Door and 5-Door models. As on all Subaru models, the Impreza WRX and 2.5GT models are equipped with Symmetrical All-Wheel Drive (two different versions – see page 2 for details.)

The goal of the 2009 WRX team was termed “Kyo-Ka” (translated from Japanese as “strengthening”). To achieve this goal Subaru engineers thoroughly revamped the performance character of the WRX for 2009. Gaining a larger turbocharger, along with a new larger-diameter exhaust and low-density catalyst for reduced backpressure, the WRX engine now produces 265 horsepower at 6,000 rpm and 244 lb.-ft. of peak torque at 4,000 rpm – significant increases from the 224 horsepower and 226 lb.-ft. in the 2008 version.

The Impreza WRX debuted an all-new platform for the 2008 model year, featuring a longer 103.1-inch wheelbase and an all-new double-wishbone rear suspension system. Revised suspension tuning for 2009 further bolsters WRX’s street performance credentials. The standard 17 x 7-inch aluminum alloy wheels now wear 225/45R17 summer performance tires, compared to 205/50R17 all-season tires used on the 2008 WRX. The Vehicle Dynamics Control (VDC) stability and traction control system, which is standard on all Impreza models for 2009, helps to enhance the WRX model’s road handling safety.

Symmetrical All-Wheel Drive

Standard Symmetrical All-Wheel Drive, which forms the common core technology on all Subaru models, gives the Impreza WRX a significant handling performance advantage over front-wheel drive competitors. Symmetrical All-Wheel Drive is a complete system comprised of the Boxer engine and the full-time power distribution system (varies by model and transmission). The aluminum Boxer engine and simple, symmetrical drivetrain layout help to lower the car’s center of gravity, which in turn contributes to its handling characteristics.

The 2009 Impreza WRX employs a viscous coupling locking center differential that distributes torque 50:50 front/rear. Should slippage occur, this system transfers more power to the wheels with the best traction. The 2009 Impreza 2.5GT, like other Subaru models equipped with automatic transmission, uses a different version of the Symmetrical All-Wheel Drive system. An electronically managed continuously variable transfer clutch actively manages power distribution based on acceleration, deceleration, and available traction. This active torque-split system automatically transfers more power to the wheels with the best grip should slippage occur.

Suspension Re-Tuned For Sharper Handling

Subaru significantly re-tuned the suspension on the 2009 WRX, resulting in sharper turn-in and more responsive handling overall. Front upper strut mounts are adopted from the STI. The front spring rate is increased from 26.5 N/mm to 38 N/mm, and the rear spring rate is increased from 24 N/mm to 34 N/mm. Diameter of the stabilizer bars is also increased, from 20 mm to 21 mm in front and from 15 mm to 16 mm in the rear. Suspension damping has also

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