Audi A4/S4/RS4 Throttle Boosters

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    Audi A4/S4/RS4 Throttle Boosters

    APR's Performance Lineup for Audi A4, S4, and RS4 vehicles.

    The APR Throttle Booster instantly transforms the way your vehicle feels by customizing how quicky your throttle or accelerator pedal works. Simply plug it in and either use the wireless controller or smart phone app to set or customize how the pedal feels.