APR ECU Upgrade for the Audi RS4/RS5 (B9) 2.9 TFSI
February 23rd, 2020
We’re excited to announce our Engine Control Unit (ECU) Upgrades are now available in all markets for the Audi RS4 and RS5 (B9) 2.9 TFSI engine with the Bosch MG1 ECU! Expect massive gains with 488-550 HP and 537-606 FT-LBS of torque on tap, depending on octane, from this simple software upgrade.
Our new suite of MG1 ECU software comes after months of extensive research and development that is typically absent from the aftermarket. Our upgrade makes the engine more powerful and more exciting. We’ve extensively calibrated the system to work flawlessly on the …