RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 porsche-911--992---2018-present--911-sport-classic-esr4784284 Please see the RENNtech R1

Please see the RENNtech R1 Package for the M157 engine for the perfect combination of the RENNtech ECU Upgrade and Diverter Valve

Stainless Steel Long Tube Headers

With the proprietary RENNtech ECU Tuning the W222 - S560 gains up to +100 HP and +102 LB-FT

Mercedes-AMG 450 | M276 | 3

Also included in the R1 Performance Package for the 190 AMG GT-S

RENNtech ECU Hand Held Tuner | HHT | C219 | CLS55 AMG Kompresspr | 517HP/552LB-FT | 5.5L Kompressor | M113 |MY2005-2006 porsche-911--992---2018-present--911-sport-classic-esr4784284 Please see the RENNtech R1RENNtech 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