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2T EA211 (Requires 4x) – Not Plug & Play
For Mercedes Benz S-CLASS (W220)
This diffuser was engineered and designed in-house to add a more aggressive appearance to the rear of your vehicle that matches with the factory appeal of the Facelift B8 A4 & S4
A stock intake that flows 200CFM may only freely support about 300HP
Audi A4/S4 B8 (Pre-Facelift Models 2009)
Pipercross Car Induction Kit PK363 911turbo 2T EA211 (Requires 4x) –Pipercross Induction Systems remove the restrictive factory airbox to offer the maximum possible airflow into the engine. All filters use Pipercross composite airflow technology and systems are only released for production when they are bench flow tested and make an improvement in airflow performance. Pipercross induction sytems are highly recommended for optimum performance. They directly replace the oem airbox and intake pipe, allowing an increase