RENNtech ECU Upgrade | A 45 AMG | W176 | 428HP/417LB-FT | 2.0L Turbo | M133 mercedes-benz-gle-class--166---2016-2020--gle-63-amg-esr4679580 With the proprietary RENNtech ECU

With the proprietary RENNtech ECU Plus Upgrade the C253 - GLC 43 AMG Coupe gains up to +41 HP and +62 LB-FT

and greater stability at high speeds

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

The RENNtech Lower Control Arm give the best improvment in combinatino with the RENNtech Toe Link Kit

The maximum power number reached with the RENNtech ECU Plus Upgrade for the R172 - SLC 43 AMG is 416 HP and 460 LB-FT

RENNtech ECU Upgrade | A 45 AMG | W176 | 428HP/417LB-FT | 2.0L Turbo | M133 mercedes-benz-gle-class--166---2016-2020--gle-63-amg-esr4679580 With the proprietary RENNtech ECURENNtech ECU Upgrade for the 176 A 45 AMG. Up to 428HP and 417TQ. Gains: +73HP & +85TQ 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