RENNtech ECU Upgrade CL 600 (C216- 625 HP / 745 LB-FT) mercedes-benz-g-class--463---2019-present--g-550-biturbo-esr2162564 000RPMwith peak gains of +336

000RPMwith peak gains of +336 HP and +358 LB-FT

RENNtech HHT - Hand Held Tuner ECU Upgrade

Rated by RENNtech:              767 HP @ 6

CLASS M (W 166) 63 AMG / Performance [2 Filters Required] (HP: 558 | Year: 11 > )

RENNtech ECU Upgrade CL 600 (C216- 625 HP / 745 LB-FT) mercedes-benz-g-class--463---2019-present--g-550-biturbo-esr2162564 000RPMwith peak gains of +336RENNtech ECU Upgrade for 216 CL 600. Up to 625 HP and 745 LB FT. Gains: +115 HP & +133 LB 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