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VR Tuned ECU Flash Tune Mercedes-Benz AMG GT-S M178 15+ Model Number: VRT-MB-AMG-GTS View Price The Mercedes AMG GT-S is truly the Porsche 911 fighter. Its front mid engine, rear wheel drive powertrain is something to fear. The GT-S comes stock with 503 horsepower and 479 ft/lbs of torque. This is no slouch by any means. Like most turbocharged vehicles from Mercedes, there is more to gain. Because of fuel and emissions regulations, you can gain over 100 horsepower and torque with new ECU calibration. Being able to tune the vehicles boost, fuel, and timin... |