G-Power->ke1323 unveiled its first tuning kit for the BMW M3 GTS back in 2011, shortly after the standard car was dropped on the market. Now, the tuner is offering an Efficiency Program for the M3 GTS - a program that will add another 15 horsepower over the previous program.

For this increase, the M3 GTS->ke2366 was updated with a "Sporty Drive" TU supercharger system that includes extreme revisions to the components of the air-intake and the fuel-supply system and a larger racing air filter. Also, the tuner remapped the standard ECU software and added a new fuel pump system. Thanks to these updates, the M3 GTS now develops a total of 650 horsepower at 7,800 rpm and a peak torque of 464 pound-feet at 3.900 rpm.

With the extra power, the M3 GTS will sprint to 100 km/h (62 mph) in 4.1 seconds – 0.3 seconds faster than stock – and to 124 mph in 11.8 seconds and will go up to a top speed of 200 mph.

Click past the jump to read more about the BMW M3 GTS by G-Power.

2013 BMW M3 GTS by G-Power

Specifications
  • Make: Array
  • Model: 2013 BMW M3 GTS by G-Power
  • Engine/Motor: V8
  • Horsepower: 650 @ 7800
  • Torque: 464 @ 3900
  • [do not use] Vehicle Model: Array

BMW M3 GTS by G-Power in Detail

In order to handle the extra power, the M3 GTS also received a series of other technical updates. The standard brake system was replaced with a new one developed by G-Power featuring six- and four-piston calipers on the front and rear, respectively, and 396 mm (15.59-inch) ceramic-carbon brake discs.

The new brake system is offers maximum braking power and reduces the M3's unsprung mass by 50 percent.

The M3 GTS now sits on a set of 20-inch Silverstone CS wheels wrapped in Michelin tires sized 255/30ZR20 on the front and 295/25ZR20 on the rear axle.