APR 2.0T ECU Upgrade for the B9 A4

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APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.0T EA888 Gen 3 engine!


APR’s ECU Upgrades are the best dollar-per-horsepower modification one can make to the 2.0T engine. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR’s optimization of the factory engine management system to take full advantage of the engine’s capabilities, without needing any end user adjustment. The software loads to the factory ECU through the OBD-II port, resulting in a clean and headache-free install. Furthermore, for those looking for tuning with a limited powertrain warranty, APR Plus has you covered!


  • $699.99
Qty:  
  • SKU
    APR-ECU-B9A4

The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 306-314 HP with 376-388 FT-LBS of torque depending on fuel grade. Gains as high as 61-68 HP and 100-111 FT-LBS of torque are available throughout the power band, depending on fuel grade and factory output, making the vehicle exceptionally quicker in all scenarios.



To get more power, the vehicle can be outfitted with an upgraded intake, intercooler, race downpipe exhaust, catback exhaust and other small modifications without requiring any new modification to the ECU.

Please Note: A Stage 2 ECU Upgrade is not necessary for use with a race downpipe on this engine.




Application Guide:

Audi A4/Allroad (B9/Typ 8W)  2.0TFSI EA888 Gen 3

Audi A5 (B9/Typ 8W)              2.0TFSI EA888 Gen 3

Audi Q5 (B9/Typ 80)               2.0TFSI EA888 Gen 3



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