RENNtech ECU Hand Held Tuner | HHT | W211 | E55 AMG Kompressor | 517HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-cl-class--215---2001-2006--cl55-amg-kompressor-esr6385228 657 LB-FT @ 4

657 LB-FT @ 4

After plugging the HSM into the OBD2 port

RENNtech HHT ECU Upgrade for 197 - SLS AMG

Note: Mercedes M276 engine performance when measured obtains higher numbers that rated from factory

Take your AMG GT to the next level with the all-new RENNtech Carbon Fiber High Performance Hood

RENNtech ECU Hand Held Tuner | HHT | W211 | E55 AMG Kompressor | 517HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-cl-class--215---2001-2006--cl55-amg-kompressor-esr6385228 657 LB-FT @ 4RENNtech ECU HHT (HandHeldTuner) for the 211 E55 AMG Kompressor. Up to 517HP and 552LB FT. Gains: +48HP & +36TQ. 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.