Front Over Pipe - Subaru BRZ & Toyota 86 12-21, 22+ 22+ WRX Factory O2 sensor locations are

Factory O2 sensor locations are also retained to ensure compatibility with factory systems

Far more engineering goes in to the design of an exhaust system than many realise

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Front Over Pipe - Subaru BRZ & Toyota 86 12-21, 22+ 22+ WRX Factory O2 sensor locations areINVIDIA FRONT PIPE The most restrictive component of the factory exhaust system is the down pipe which begins right after the turbocharge or headers. Invidia Exhausts use a larger pipe diameter and smooth bends which allows the engine to exhale exhaust gases with fewer restrictions and turbulence. Because of these reasons, Invidia down pipes make for the most popular exhaust upgrade that adds a substantial bump in both horsepower and torque. To