German tuner G-Power has released three tuning packages for the new, F90-generation BMW M5 sedan. The updates include ECU remapping, the additional of a few custom parts and some styling tweaks.

The first stage sees the twin-turbo 4,4-litre V8 (which in stock form churns out 441 kW and 750 N.m) tuned to deliver 515 kW and 840 N.m. Stage two's 552 kW tune bumps peak torque to 920 N.m thanks to more ECU fettling and the addition of new downpipes.

The flagship 588 kW package adds modified turbochargers with larger turbines, compressor wheels and housings, plus enlarged air intakes. A titanium exhaust system with four 100 mm carbon-and-titanium tailpipes is fitted as a finishing touch. These additions increase the torque figure to 980 N.m.

The third stage unlocks an unrestricted top speed of 335 km/h and a claimed 0-100 km/h time of just 2,9 seconds, knocking half-a-second off the standard model’s time.

To ensure the M5 looks the part, G-Power has given it a Venturi RR bonnet cast from carbon-fibre and featuring air diffusers (the tuning firm claims this improves airflow to the engine bay). A set of 21-inch Hurricane RR forged aluminium wheels are also part of the package.