RENNtech ECU Hand Held Tuner (HHT) for CL 65 | C215 | 670 HP / 840 LB-FT | MY2003-2006 mercedes-benz-glc-class--253---2016-present--glc-300-esr6983720 Adjustment Methods: PC or Android

Adjustment Methods: PC or Android (Tablet)

We have found the M276 engine stock performance numbers vary from the baseline figures claimed by Mercedes-Benz

SL 600 (R230) Stock Performance:

The RENNtech EVM is placed in the trunk

In combination with our performance Brake Pads

RENNtech ECU Hand Held Tuner (HHT) for CL 65 | C215 | 670 HP / 840 LB-FT | MY2003-2006 mercedes-benz-glc-class--253---2016-present--glc-300-esr6983720 Adjustment Methods: PC or AndroidRENNtech ECU HHT (HandHeldTuner) for the 215 CL 65 AMG. Up to 670HP and 840 LB FT LB FT. Gains: +66HP & +102 LB FT. 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.