The 2016 Audi RS7 C7 is already a serious performance machine, but the 4.0L twin-turbo V8 responds extremely well to improved exhaust flow. For this build, we fitted a set of Revhigh Catless Downpipes and put the car on the dyno to measure the results. Dyno Results Before:364.0 wheel kW814.1 wheel Nm After:445.5 wheel kW925.7 wheel Nm That's an impressive +81.5 wheel kW and +111.6 wheel Nm. In horsepower terms, the car gained approximately 109 wheel HP, which equates to rough