RENNtech ECU Upgrade | C207 | E 550 Coupé | 540HP / 705 LB-FT | +105HP / 197LB-FT | 4.7L V8 BiTurbo | M278 | MY2012-2013 mercedes-benz-gle-class--166---2016-2020--gle-550e-plug-in-hybrid-esr5926051 X253 - GLC SUV GLC63

RENNtech ECU Upgrade | C207 | E 550 Coupé | 540HP / 705 LB-FT | +105HP / 197LB-FT | 4.7L V8 BiTurbo | M278 | MY2012-2013 mercedes-benz-gle-class--166---2016-2020--gle-550e-plug-in-hybrid-esr5926051 X253 - GLC SUV GLC63RENNtech ECU Upgrade for 207 E 550 Coupe BiTurbo. Up to 540HP and 705 LB FT. Gains up to 105 HP and 192 LB FT 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 delivers the file you choose directly to the ECU.

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