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 SL 400 BiTurbo (R231 -

SL 400 BiTurbo (R231 - M276 Biturbo 4-MATIC Engine) Stock Performance:

RENNtech is able to add up to 111 HP and 147 LB-FT to the 5

575 awhp @ 5

3 at 7680 rpm + 14

660 whp @ 6

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 SL 400 BiTurbo (R231 -RENNtech 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