RENNtech ECU Upgrade | R172 | SLC 43 AMG | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2020 mercedes-benz-glc-class-coupe--253---2016-present--glc-43-amg-esr2615438 5L V8 BiTurbo) Modified Performance

5L V8 BiTurbo) Modified Performance (at crank):

Application for BMW:

By modifying ignition timing

and every kit includes rod-end boots to ensure longevity

RENNtech ECU Upgrade | R172 | SLC 43 AMG | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2016-2020 mercedes-benz-glc-class-coupe--253---2016-present--glc-43-amg-esr2615438 5L V8 BiTurbo) Modified PerformanceThe 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