RENNtech ECU Upgrade | S 650 Maybach | W222 | 670HP/840LB-FT | 6.0L BiTurbo V12 | M279 | MY2018-2020 audi-rs5--b9-5---2020-2024--2-9l-twin-turbo-v6-esr1175443 660 whp @ 6

660 whp @ 6

RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s

RENNtech Porsche ECU Upgrade 997 GT3 3

3 at 7680 rpm + 14

Levante V6

RENNtech ECU Upgrade | S 650 Maybach | W222 | 670HP/840LB-FT | 6.0L BiTurbo V12 | M279 | MY2018-2020 audi-rs5--b9-5---2020-2024--2-9l-twin-turbo-v6-esr1175443 660 whp @ 6RENNtech ECU Upgrade for 222 S 650 Maybach. Up to 670HP and 840LB FT. Gains: +49HP & +102LB 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