APR is pleased to present the world’s first ECU Upgrade for the C6 A6 3.0 TFSI engine. The APR 3.0 TFSI ECU Upgrade is an expertly recalibrated engine control strategy that remaps the boost pressure, timing and air fuel ratios inside the factory ECU to provide smooth and reliable power as if intended by the OEM. Up to 95 all wheel horsepower and 75lb-ft are available throughout the power band with 93 octane fuel! Read More