2019 Detroit Auto Show: Subaru STI S209

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Better Airflow
The larger turbo needs more air, so the S209 gets a new intake duct, a silicone turbo inlet duct, and an intercooler water spray to lower the intercooler temperature. Vents on the front fenders provide additional engine cooling, while at the rear vents break up air turbulence to reduce drag. Also aft of the engine bay are high-performance mufflers that are lighter and provide better airflow through to larger stainless-steel exhaust tips.

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