RENNtech ECU Upgrade | GLE 400 | X292 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 ferrari-458--2009-2015--esr3806621 X253 - GLC SUV GLC63

X253 - GLC SUV GLC63 AMG SUV | MY2020+

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

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

Rated by RENNtech (peak @wheel):              505 whp @ 5

997 Carrera GTS

RENNtech ECU Upgrade | GLE 400 | X292 | 392HP/432LB-FT | 3.0L BiTurbo V6 | M276 ferrari-458--2009-2015--esr3806621 X253 - GLC SUV GLC63RENNtech ECU Upgrade for 292 GLE 400 BiTurbo 4 MATIC Coupe. Up to 392HP and 454LB FT. Gains: +40HP & +70LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and