2018 E63 S came in for more power. These are very powerful cars coming from the factory with a 4.0 BiTurbo engine. We tested this car stock and it made 485whp in RWD dyno mode.
We then added our tuning software and it gained 122WHP over stock and 120WTQ. This was accomplished with software only ending up at 607WHP on 94 octane.