RENNtech ECU Upgrade | R172 | SLC 43 AMG | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2020 bentley-flying-spur--2020-present--4-0l-v8-tfsi-esr8250520 in addition to selecting the

in addition to selecting the finest materials

The RENNtech Exhaust Valve Module is made in Germany

W213 - E 63 Sedan | MY2017+

176 - A Class and 156 - GLA Class

RENNtech ECU Upgrade | R172 | SLC 43 AMG | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2020 bentley-flying-spur--2020-present--4-0l-v8-tfsi-esr8250520 in addition to selecting theThe RENNtech ECU Upgrade brings the R172 SLC 43 AMG up to 400 HP and 440 LB FT Gains: +41 HP and +62 LB FT. RENNtech tuning products are certified to meet CARB standards in all 50 States. RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade