R1 Performance Package | C209 | CLK 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-e-class-wagon--213---2017-present--e-63-amg-esr8081627 RENNtech ECU Upgrade for 463

RENNtech ECU Upgrade for 463 - G 63 AMG

Intermediate ECU Upgrade | Up to 638HP / 695LB-FT | Gains: +33HP & +69LB-FT

RENNtech | X290 | AMG GT63 | Side Skirts | Carbon Fiber | Gloss Finish

If your Mercedes-AMG is equipped with factory exhaust valves

Sport Mufflers | Gains: +153HP

R1 Performance Package | C209 | CLK 500 | 325 HP / 365 LB-FT | 5.0L NA V8 | M113 mercedes-benz-e-class-wagon--213---2017-present--e-63-amg-esr8081627 RENNtech ECU Upgrade for 463R1 Performance Package for 209 CLK 500. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 325HP and 365 LB FT. The R1 performance package for the Mercedes 500 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