APR’s RS6/7 Turbo ECU Upgrade is now available for the S6/7 4.0 TFSI!

APR’s RS6/7 Turbo ECU Upgrade is designed for use with Audi’s high output RS6/7 4.0 TFSI turbochargers, which are a direct bolt on to the factory S6/7 4.0 TFSI Engine. This upgrade offers 634 HP and 671 FT-LBS of torque on 93 octane fuel and 707 HP and 714 FT-LBS of torque with race fuel! The substantial increase in power and torque comes with lightning fast response and smooth daily driving that transforms the vehicle into a new class of enjoyment! Read More