04/11/2026
Audi RS6 C8 4.0 TFSI in for his Etuners treatment!
With 600PS and 800Nm from the factory, the RS6 is already an incredibly capable machine. But there's always room for improvement.
We started with a baseline run to assess the car's performance before proceeding with our Etuners Stage 1 ECU calibration, complemented by a BMC drop-in air filter.
After multiple runs and careful fine-tuning, we achieved a substantial improvement in power and torque throughout the rev range.
Stock: 592bhp / 800Nm
Etuners Stage 1: 750bhp / 950Nm
With dyno proven gains of 158bhp and 150Nm, with the stock turbos and exhaust system retained.
More importantly, the additional performance comes with the smooth power delivery and everyday drivability that makes the RS6 such an exceptional all-rounder.