G-Power specialists are mostly known for their exceptional BMW tunings and it is not a secret that they prefer to work on the M series. But who wouldn't? The buzz around them is that they have revised their supercharger program for the V8-powered M3 model, thus making it gain 20 horses. But there is more to that. This new program also counts those who have already added a supercharger system. The benefits for them are the biggest, since they can enhance the power output of their BMW to 630 hp.

The additional power is delivered via new software for the electronic engine control. As a matter of fact, the tuners developed it from the beginning and created an entirely new set of maps for the fuelling, ignition, variable-valve-timing and boost control. Due to the new configurations they also had to mind the fuel efficiency and emissions.

The complete development process for the software took about one year to be completed. But this did not include only in-house testing, but also many kilometers on the racetrack in real driving.

The result is a powerful and dynamic engine, which puts emphasis on supreme performance. Precisely, we must take into account that the standard M3 produces only 420 horsepower (309 kW) and 400 Nm of torque. The G-Power conversion system makes the 630 horses (463 kW) and the 590 Nm of torque a reality, as well as the spectacular 4.0 seconds 0-100 km/h sprint. The top speed is up to 330 km/h.

The new 20 hp can not go without new alloys. More power just needs new wheels to run on. In this case, the BMW is fitted with Diamond-Cut double spoke Hurricane RR forged alloys that are 20 inches of size. They are shod with 245/30ZR20 and 295/25ZR20 Michelins at the front and rear, respectively.

Every BMW fan would agree that if there is so much horsepower, there should be appropriate ride height modifications. The case here is no different and we have received an M3 which is 30 mm lower to the ground. The ceramic brake system is responsible for the stopping power of the car. It has 396 mm vented discs with six-pot calipers on the front axle, and 380 mm vented discs with four-pot calipers brake at the rear. Good job guys!

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Source: G-Power