RENNtech Intermediate ECU Upgrade | X166 | GLS63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2016+ maserati-mc20-esr2615562 RENNtech's boost gauge features an

RENNtech's boost gauge features an internal microprocessor which controls the pointer (needle) movement and a digital high torque stepper motor to ensure quick

9 seconds @ 129 mph with 0-60 mph coming in 3

RENNtech Pre-Preg Carbon Fiber Rear Diffuser Extensions for the C190 - AMG GT R

Stainless Steel Mounting hardware

521 LB-FT @ 3

RENNtech Intermediate ECU Upgrade | X166 | GLS63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2016+ maserati-mc20-esr2615562 RENNtech's boost gauge features anIntermediate ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +69LB FT RENNtech M157 Biturbo ECU+ Upgrades are TV approved! Our proprietary ECU+ upgrade for the Mercedes M157 Biturbo 4 MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. Our intermediate level ECU upgrade offers huge gains in performance across the entire RPM range without sacrificing around town