RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 bmw-m3--f80---2014-2018--3-0-liter-inline-six-engine-featuring-twin-turbocharging-esr1868515 +20 HP / + 21

+20 HP / + 21 LB-FT

C207 - E 550 Coupé – M278 | 4

549 awhp @ 5

RENNtech ECU HHT (HandHeldTuner) for the C215 - CL55 AMG Kompressor

R1 Performance Package for 220 - S 65 AMG

RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 bmw-m3--f80---2014-2018--3-0-liter-inline-six-engine-featuring-twin-turbocharging-esr1868515 +20 HP / + 21RENNtech ECU HHT (HandHeldTuner) for the 219 CLS55 AMG Kompressor. Up to 517HP and 552LB FT. Gains: +48HP & +36TQ. RENNtech tuning products are certified to meet CARB standards in all 50 States. 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