RENNtech ECU+ Upgrade | C190 | AMG GT C | 659HP/614LB-FT | 4.0L V8 BiTurbo | M178 | MY2018-2021 porsche-cayenne--2017-present--po536--340ps--esr7220361 A CARB Executive Order was

A CARB Executive Order was granted to the RENNtech HHT based on emission test results in the modified configuration

Up to 670HP and 740LB-FT

Mercedes-AMG S63 E-Performance (W223) 2024+

RENNtech ECU HHT (HandHeldTuner) for the 220 - S 55 AMG

Up to 460 HP and 415 TQ @ crank

RENNtech ECU+ Upgrade | C190 | AMG GT C | 659HP/614LB-FT | 4.0L V8 BiTurbo | M178 | MY2018-2021 porsche-cayenne--2017-present--po536--340ps--esr7220361 A CARB Executive Order wasECU+ Upgrade Up to 659HP 614LB FT Gains: +84HP & +93LB FT 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 directly into the OBD2 port and delivers the file you choose