RENNtech ECU Upgrade | CLA 45 AMG | C117 | 428HP/417LB-FT | 2.0L Turbo | M133 audi-s4--b9---2017-2024--3-0l-turbocharged-v6-tfsi-esr1699755 the GL 550 gains up

the GL 550 gains up to 92 HP and 167 LB-FT

Our ECU tune offers the biggest performance gains on the market with our dyno results increasing performance from 329 HP and 354 lb/ft torque

Rated by Mercedes-Benz:        617 HP @ 6

By allowing a greater volume of intake charge air

RPM Tuned: 601 HP | 562 LB-FT

RENNtech ECU Upgrade | CLA 45 AMG | C117 | 428HP/417LB-FT | 2.0L Turbo | M133 audi-s4--b9---2017-2024--3-0l-turbocharged-v6-tfsi-esr1699755 the GL 550 gains upRENNtech ECU Upgrade for the 117 CLA 45 AMG. Up to 428HP and 417TQ. Gains: +53HP & +67TQ 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