RENNtech Intermediate ECU Upgrade | C216 | CL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-14 porsche-macan-turbo--2015-2021--esr8709534 increasing the engine's rev limiter

increasing the engine's rev limiter and modifying boost mapping for turbo-charged vehicles

Rated by Mercedes-Benz:      503 HP @ 6

This full aero package was developed to function cohesively

Carrera 4 GTS Cabriolet

RENNtech Intermediate ECU Upgrade | C216 | CL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-14 porsche-macan-turbo--2015-2021--esr8709534 increasing the engine's rev limiterIntermediate ECU Upgrade Up to 638HP 695TQ Gains: +75HP +101TQ 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