At the heart of G-Power's tune is BMW's 4.4-liter twin-turbocharged V8 engine that normally produces 560-horsepower and a peak torque of 680 Nm (502 lb-ft) from 1,500 rpm.
After the German company's engineers update the ECU and add a new custom exhaust system, the V8's output is lifted to 640-horsepower and 777Nm (573 lb-ft).[...]