RENNtech ECU Hand Held Tuner (HHT) for SLK 55 | R171 | 380 HP / 395 TQ | MY2005-2009 mercedes-benz-clk-class--209---2004-2010--clk-500-esr5978939 and inspected prior to mechanical

and inspected prior to mechanical upgrades

R3+ Performance Package for AMG E 63 (S): ECU Upgrade (HHT)

RENNtech V3 Digital Suspension Lowering Module Software Download (ALL):

Owners can also plan and budget for additional modifications

The desired lowering setting will be loaded onto the vehicle via the ODB2 port in the footwell of the car

RENNtech ECU Hand Held Tuner (HHT) for SLK 55 | R171 | 380 HP / 395 TQ | MY2005-2009 mercedes-benz-clk-class--209---2004-2010--clk-500-esr5978939 and inspected prior to mechanicalRENNtech ECU HHT (HandHeldTuner) for the R171 SLK 55 AMG. Up to 380HP and 395 LB FT TQ. Gains: +18HP & +17TQ. 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.