With an all-new drivetrain onboard, G-Power’s engineers had to start from scratch when building up the new M5, but already the German tuner is offering a mild--by G-Power standards--640 horsepower and 573 pound-feet of torque upgrade.
In case you’re counting, that’s a full 80 horsepower and 68 pound-feet of torque increase over the stock M5.
According to G-Power, the acceleration time for the 0-60 mph run now drops to just 3.9 seconds and top speed rises to 195 mph.
Key among the upgrades are a retuned ECU, increased boost pressure from the stock turbos, and a high-flow intake and exhaust system. This is only the first stage G-Power is planning, though more power will require more extensive modifications, especially to the transmission, according to the tuner.
In addition to the power upgrade, there are also a new set of 21-inch forged alloy wheels shod with Michelin Pilot Super Sport tires (265/30 front and 305/25 rear), carbon-ceramic brake discs, a custom coil-over suspension setup, and exterior decals.