RENNtech HHT ECU Upgrade for G 550 (W463- 402 HP / 405 LB-FT) mercedes-benz-cl-class--215---2001-2006--cl-600--2000-2002--esr9028642 Up to 320HP and 355

Up to 320HP and 355 LB-FT

Gains: +27HP & +20LB-FT

CLS 55 AMG Kompressor

RENNtech Bluetooth HSM | Digital Suspension Lowering Module for vehicles equipped with Airmatic / Magic Body Control Suspension

After plugging the HSM into the ODB2 port

RENNtech HHT ECU Upgrade for G 550 (W463- 402 HP / 405 LB-FT) mercedes-benz-cl-class--215---2001-2006--cl-600--2000-2002--esr9028642 Up to 320HP and 355RENNtech ECU Upgrade for 463 G 550. Up to 402HP and 405LB FT. Gains: +20HP & 14LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software