RENNtech ECU+ Upgrade | GL 550 | BiTurbo 4.7L V8 | X166 | 540 HP / 705 LB-FT | M278 Engine mercedes-benz-gla-class--156---2014-2020--gla-45-amg-esr2541736 CLASS R LONG (V 251)

CLASS R LONG (V 251) 350 V6 Blue Efficiency (HP: 306 | Year: 12 > )

SL (R230) 350 V6 [2 Filters Required] (HP: 272 | Year: 06 > 08)

The Mercedes-AMG E63 (W/S 213) is powered by the latest V8 BiTurbo -engine developed by AMG

The two-piece carbon fiber canards ars finished in a high gloss UV protectant clear coat

ML 400 BiTurbo (X166 - M276 Biturbo 4-MATIC Engine) Stock Performance:

RENNtech ECU+ Upgrade | GL 550 | BiTurbo 4.7L V8 | X166 | 540 HP / 705 LB-FT | M278 Engine mercedes-benz-gla-class--156---2014-2020--gla-45-amg-esr2541736 CLASS R LONG (V 251)ECU+ Upgrade 540HP 705LB FT Gains: +92HP +167LB 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. Programming takes only a few minutes and the vehicle can be