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APR’s RS6/7 Turbo ECU Upgrade for the C7 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!

APR’s RS6/7 Turbo ECU Upgrade comes with all the benefits and features, including APR EMCS Program Switching and APR Mobile, and is conveniently flashed through the vehicle’s OBD-II port.

Requirements and Recommendations

  • Turbochargers:
    OEM RS6 / RS7 Turbochargers are required.
  • Intake:
    A high flow intake system, or drop in panel filter is recommended.
  • Exhaust:
    APR's upcoming Cast Downpipes are highly recommended and are required to meet the advertised power figures.
  • Cooling:
    Upgraded turbocharger air-to-water cooling is highly recommended.
  • Spark Plugs:
    APR's software is designed for use with Denso IKH24 spark plugs gapped to 0.024" ±0.002" or 0.6mm ±0.05mm with a change interval of 10-15,000 mi or 16-24,000 km.
  • Transmission:
    APR's upcoming TCU Upgrade is highly recommended and is required to raise the factory rev limiter to achieve the advertised power figures.


  •  ECU Upgrades
  •  Engine Performance
  •  A6, S6, RS6 & A6 Allroad (C7)
  •  A7, S7, RS7 (C7)