APR’s Stage II ECU Upgrade is now available for the Audi S6, S7, S8, RS6 and RS7 4.0 TFSI Engine! The APR Stage II ECU Upgrade is for use with a high flow exhaust Race DP system and produces incredible gains! Gains as high as +25-71 Horsepower and +32-95 FT-LBS of Torque over Stage I are available, depending on octane and vehicle platform.

Read more:

– Audi S6 / S7 (C7)
– Audi S6 / S7 (C7.5)
– Audi S8
– Audi RS6 / RS7 (C7)
– Audi RS6 / RS7 (C7.5)