RENNtech ECU Hand Held Tuner (HHT) for CLK 63 AMG BS (C209- 534 HP / 485 LB-FT) mercedes-benz-sl-class--231---2012-2016--sl63-amg-esr3199425 W253 - GLC63 AMG SUV

W253 - GLC63 AMG SUV

They have also been maximised in internal volume to reduce restrictions and in doing so we have also redesigned the OEM central cover as it fouls on the significantly larger system

355 HP @ 5750 RPM

RENNtech V3 DLM Module Specifications:

Crank Performance Numbers are calculated with a 14% Drivetrain loss on 4MATIC+ vehicles

RENNtech ECU Hand Held Tuner (HHT) for CLK 63 AMG BS (C209- 534 HP / 485 LB-FT) mercedes-benz-sl-class--231---2012-2016--sl63-amg-esr3199425 W253 - GLC63 AMG SUVRENNtech ECU HHT (HandHeldTuner) for the 209 CLK 63 AMG Black Series. Up to 534 HP and 485 LB FT LB FT. Gains: +34 HP & +20 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