RENNtech ECU Upgrade for SLS Black Series (C197- 657 HP / 490 LB-FT) mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 increase initial turbo spooling and

increase initial turbo spooling and enhance sound output

positioned behind main radiator to improve air flow and cooling • Two cooling ducts with integrated vortex generators

0 TFSI (4M8)

RENNtech strives to deliver the highest quality carbon fiber products in the industry

RENNtech ECU Upgrade for SLS Black Series (C197- 657 HP / 490 LB-FT) mercedes-benz-glc-class-coupe--253---2016-present--glc-63-amg-esr1091906 increase initial turbo spooling andRENNtech 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