R1 Performance Package | W220 | S 55 AMG | 372 HP / 411 LB-FT | 5.5L NA V8 | M113 porsche-911--991-1---2011-2016--gt3-rs-esr2317826 TCU Transmission Control Unit Upgrade

TCU Transmission Control Unit Upgrade : Delivers faster acceleration by matching the power output of our ECU and Turbo upgrades with increased Clutch Torque Limits

which make these Ingolstadt machines even more attractive on all fronts

The front splitter is designed to improve vehicle aesthetics and increase front end down force while still maintaining the same approach angle as the OE front fascia

AMG GT (C190 | M178 | 4

R1 Performance Package | W220 | S 55 AMG | 372 HP / 411 LB-FT | 5.5L NA V8 | M113 porsche-911--991-1---2011-2016--gt3-rs-esr2317826 TCU Transmission Control Unit UpgradeR1 Performance Package for 220 S 55 AMG. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 372HP and 411 LB FT. The R1 performance package for the Mercedes 55 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases horsepower, torque and throttle