RENNtech ECU Upgrade | C218 | CLS 63 S AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014 mercedes-benz-e-class-sedan--212---2010-2013--e63-amg-biturbo--2012-2013--esr4033562 384 LB-FT @ 1

384 LB-FT @ 1

M176/177/178

Cutting instructions and template supplied by RENNtech

Diffuser Attachments and Rear Lipp Attachment

RENNtech ECU Upgrade | C218 | CLS 63 S AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014 mercedes-benz-e-class-sedan--212---2010-2013--e63-amg-biturbo--2012-2013--esr4033562 384 LB-FT @ 1ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +49LB 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 components