RENNtech Intermediate ECU Upgrade | C217 | S 63 AMG | Coupe | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2017 mercedes-benz-e-class-sedan--212---2010-2013--e-550-biturbo-esr8609550 0L BiTurbo V12 Engine) Modified

0L BiTurbo V12 Engine) Modified Performance:

Constructed of high strength

The rear spoiler offers a smooth transition of airflow over the trunk lid of the vehicle to ambient air and produces greater down force across the rear of the vehicle at speed

Fit and finish meets OEM Mercedes-Benz quality standards thanks to the parts 100% pre-preg carbon fiber construction

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RENNtech Intermediate ECU Upgrade | C217 | S 63 AMG | Coupe | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2015-2017 mercedes-benz-e-class-sedan--212---2010-2013--e-550-biturbo-esr8609550 0L BiTurbo V12 Engine) ModifiedIntermediate ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +25LB FT RENNtech M157 Biturbo ECU Upgrades are TV approved! Our intermediate level 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. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline