RENNtech ECU Upgrade | C218 | CLS63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 lamborghini-gallardo--2003-2013--esr8960284 The RENNtech AMG GT63 Side

The RENNtech AMG GT63 Side Skirts feature unique design elements with strategically formed surfacing and a shaped to improve airflow while enhancing the AMG GT63's dynamic aesthetics

GLS 450 BiTurbo (X166 - M276 Biturbo 4-MATIC Engine) Modified Performance:

RENNtech | C/R 190 | AMG GT (Facelift) | Carbon Fiber Front Splitter

RENNtech HSM | Hand-Held Suspension Module Specifications:

RENNtech ECU Upgrade | C218 | CLS63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 lamborghini-gallardo--2003-2013--esr8960284 The RENNtech AMG GT63 SideECU Upgrade Up to 638HP 695TQ Gains: +88HP +151TQ RENNtech M157 Biturbo ECU Upgrades are TV approved! Our intermediate level ECU upgrade for the Mercedes M157 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas