RENNtech ECU+ Upgrade | C190 | AMG GT S | 601HP/582LB-FT | 4.0L V8 BiTurbo | M178 | MY2015-2017 porsche-cayenne--9ya---2018-present--cayenne-gts--my2020---esr5567788 CLASS S (W 221) 500

CLASS S (W 221) 500 Blue Efficiency 4-matic [2 Filters Required] (HP: 435 | Year: 11 > )

8 GTS [2 Filters Required] (HP: 405 | Year: 07 > 10)

530 awhp @ 5

5"  Weight:   Construction: 1-piece Forged Tire Size: 275/35/19

RENNtech ECU+ Upgrade | C190 | AMG GT S | 601HP/582LB-FT | 4.0L V8 BiTurbo | M178 | MY2015-2017 porsche-cayenne--9ya---2018-present--cayenne-gts--my2020---esr5567788 CLASS S (W 221) 500ECU+ Upgrade Up to 601HP 582LB FT Gains: +65HP & +87LB 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