German tuner tries out its supercharger kit for the M3 at the Nardo High-Speed Test event in Italy.

Cutting-edge BMW tuner G-Power has tested this new M3 kit at the 2011 Nardo High-Speed Test event in Italy run by German car magazine Auto, Motor und Sport and achieved an impressive result.

Top speed came in at 207.10 mph (333.29 km/h) on the track at Nardo for the G-Power M3 with the SK II "Sporty Drive" supercharger system. The car was driven by Christian Stöber, Vice President and Technical Director at G-Power. Only two other cars, one with 900 HP and the other with 1000 HP, could beat it.

The SK II kit dials power up to 570 PS (419 kW/ 562 bhp) and 565 Nm (417 lb-ft) on the M3 which is good for a 0 to 100 km/h (62 mph) sprint of 4.4 seconds while the car reaches 200 km/h (124 mph) in 12.9 seconds.

The M3 also gets a GM3 RS coilover suspension, beefier brakes and Silverstone rims wrapped in Michelin Pilot Super Sport road tires.

G-Power says that with a taller gear top speed could have gone as far as 340 km/h (211 mph).

The price tag of the G-Power SK II "Sporty Drive" supercharger kit comes in at €11,500, not including installation.

Gallery: G-POWER M3 SK II reaches 207.10 mph (333.29 km/h) at Nardo [video]