Audi announced the RS6 Avant Performance on October 22, 2015. It features the same 4.0-litre twin-turbo V8 engine as the standard RS6, but with the help of a retuned ECU mapping, it increased power output to 605 PS (445 kW; 597 bhp) at 6100-6800 rpm and increased torque to 750 N⋅m (553 lbf⋅ft) at 2500-5500 rpm.

At GCAP we have designed a package to further refine the Audi's character with a few simple modifications.


We use an Akrapovič exhaust system on our tuning packages for this vehicle.

Audi’s high-performance RS models are an ideal match for the expertly styled and beautifully engineered Akrapovič Evolution exhaust systems. The Evolution gives more power, higher torque, decreases the weight, and delivers an unmistakable Akrapovič sound—which has a deep sound at lower revs and a ‘popping’ sound as things speed up when the throttle is lifted. This titanium exhaust system has cast collectors and three mufflers, with the central one featuring an x-piece inside, which increase power and improve its sound. The valves of the system are designed to open and close in line with the RS’ standard electronics, and the whole system has carbon-fibre tailpipes to show off the exquisite finish of the Akrapovič exhaust.


We have developed our own software to increase the cars performance. This comes in two forms. A stage 1 map (I.E. a software only calibration with no hardware changes) and a stage 2 (with our Akrapovič exhaust system).

When tuning we measure afr, ignition timing, intake temps, EGTs etc. to ensure our tune is as safe and reliable as possible whilst drawing the most out of your supercar.


We have seen gains up to 660bhp.


As with most Audi, the brake system is excellent. However we can offer modified braided brakes lines. Our lines have a stronger wall density delivering a more precise and accurate brake pedal feel. This translates into more confidence in your supercar.



GCAP Performance

6 Powis Mews

Notting Hill


W11 1JN