RENNtech Intermediate ECU Upgrade | W222 | S 63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2017 porsche-cayenne--92a---2011-2018--gts-esr8899844 636 LB-FT @ 3

636 LB-FT @ 3

The maximum power number reached with the RENNtech ECU Plus Upgrade for the X253 - GLC 43 AMG SUV is 416 HP and 460 LB-FT

Dodge and Airstream Vans equipped with the 2

3 seconds at 125 mph with 0-60 mph coming in a mere 3

Finishing of the carbon fiber parts comes in the form of a high gloss UV protectant coating

RENNtech Intermediate ECU Upgrade | W222 | S 63 AMG | Sedan | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2017 porsche-cayenne--92a---2011-2018--gts-esr8899844 636 LB-FT @ 3Intermediate ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +25LB FT 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 directly to the ECU. Programming takes only a few minutes and the