C7 RS6 and RS7 4.0 V8 biturbo builds develop in stages. The featured 1000 hp package retains standard engine internals but strengthens the transmission. The highest 1000–1200 hp specification includes additional engine and driveline modifications.
Calibration and supporting systems
The first package is ECU tuning, specified at up to 650 hp and 800 Nm. The second adds intake, exhaust and charge-air cooling changes.
The second package is specified at up to 720 hp and 1000 Nm. These figures describe that package, not a guaranteed result for every RS6 or RS7.
800–900 hp: turbos and pumps
The third package adds higher-capacity turbos and fuel pumps, with a specified result of 800–900 hp and approximately 1100 Nm.
These components build on the earlier intake, exhaust and cooling changes.
1000 hp and the maximum package are different
The 1000 hp version includes mechanical transmission strengthening while retaining factory engine internals.
For the maximum output, rods, bearings and pistons are changed, and the front and rear differentials and half shafts are prepared. These modifications are not part of every 1000 hp build.