RENNtech ECU Upgrade | W212 | E63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 maserati-quattroporte--156---2013-present--s---3-0l-twinturbo-v6--esr7930835 0L V6 Turbo Diesel) Stock

0L V6 Turbo Diesel) Stock Performance (at crank):

With the proprietary RENNtech ECU Plus Upgrade the R172 - SLC 43 AMG gains up to +41 HP and +62 LB-FT

With the proprietary RENNtech ECU Plus Upgrade the X253 - GLC 43 AMG SUV gains up to +41 HP and +62 LB-FT

ECU+ Upgrade | Up to 783 HP / 798 LB-FT | Gains: +102 HP & +62 LB-FT

CL 600 (C215) Stock Performance:

RENNtech ECU Upgrade | W212 | E63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-13 maserati-quattroporte--156---2013-present--s---3-0l-twinturbo-v6--esr7930835 0L V6 Turbo Diesel) StockECU 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