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APR 1.8T ECU Stage 1 Upgrade Audi A4 B6




APR's ECU upgrade is available in octane-specific variations and is conveniently flashed to the vehicle's factory ECU through the OBD-II port without any physical modification to the factory ECU. APR's EMCS functionality puts the control of the engine's operation at your fingertips and allows for additional features and options to be installed to the OEM ECU.

Stage 1 ECU Upgrade gives you 215 horsepower and 245 FT-LBS of torque. 

All APR Software upgrades are only available at our Joplin, Missouri retail location. In order to receive an APR software upgrade, please click here to schedule an appointment. You may either add this item to your cart and purchase online, or may also pay in store. 


 Vehicle Engine
Audi A4 B6 1.8T