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Audi RS6 (C6) 5.0 TFSI

The 5 liter TFSI engine installed on the Audi RS6 C6 is one of the most powerful engine units in VAG group. Engine code is BUH and it is a monster. Here is why: 10 Cylinders, 40 valves, a total of seven radiators and four electric cooling fans are needed to cool the engine and related components under the aluminium bonnet of the RS6. When this engine is tuned, the results are very impressive.

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Upgrade specifications

  • 98RON fuel
  • Etuners stage 1 ECU remap

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Performance results

  • Maximum flywheel horsepower: 655 hp (measured stock as 576hp), gains  79hp
  • Maximum torque: 92 Kgm (measured stock as 79Kgm), gains 13 Kgm



  • Isa Aldoy Posted April 14, 2020 3:31 am

    What do suggest i upgrade on my 2009 audi rs6 v10, for a etuners stage 2 tune, and do u recommend gearbox tune also

    • Stelios Alexandrakis Posted April 16, 2020 12:26 am

      Hi Isa! Thank you for trusting us with your car to tune.
      I would definitely recommend getting a gearbox remap for Stage2. It makes a big difference!

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