Mercedes GL450 ECU Flash Makes V8 Bi-Turbo a Beast VRTuned.com October 28, 2014 Company News, Product Info The latest 2013 and up Mercedes GL450 features a 4.6L Bi-Turbo V8 with 362 horsepower to the crank. Not bad considering it also puts out 406ft/lbs of torque. But to make this soccer mom machine a pure...
