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Please note that the Mercedes M176 engine performance when measured
The vast amount of increased torque across the entire RPM range gives the 550 an extra edge to compete with AMG powered vehicles
The RENNtech Stage II M256 Turbo Upgrade isn’t just an OEM turbo charger with machined internals
We have found the M278 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz
RENNtech ECU Upgrade for SLS Black Series (C197- 657 HP / 490 LB-FT) mercedes-benz-g-class--463---1990-2018--g-55-amg-esr3006970 Please note that the MercedesRENNtech 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 reflashed at any time as many times as you wish. The
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