RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr3006970 Bentley Continental GT Speed (MY2012-18)

Bentley  Continental GT Speed (MY2012-18)

RENNtech Coilover Suspension for the 197 - SLS AMG

RENNtech inner fender housings are required

718 Boxster GTS 2

554 wtq @ 3

RENNtech Intermediate ECU Upgrade | R231 | SL 63 AMG | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2012-14 mercedes-benz-g-class--463---1990-2018--g-55-amg-esr3006970 Bentley Continental GT Speed (MY2012-18)Intermediate ECU Upgrade Up to 638HP 695TQ Gains: +75HP +101TQ 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