RENNtech ECU+ Upgrade | Aston Martin | DBX V8 | 644 HP / 676 LB-FT | 4.0L V8 BiTurbo | M177 | MY2021-2023 mercedes-benz-cls-class--218---2015-2018--cls63-amg-biturbo-4matic-esr2890927 This is accomplished by improving

This is accomplished by improving the underbody airflow and allowing for a smooth transition to ambient air when the vehicle is at speed

Available in black or chrome

and titanium weighs 9 kg less than the original

With the release of the Vantage V8

RENNtech ECU+ Upgrade | Aston Martin | DBX V8 | 644 HP / 676 LB-FT | 4.0L V8 BiTurbo | M177 | MY2021-2023 mercedes-benz-cls-class--218---2015-2018--cls63-amg-biturbo-4matic-esr2890927 This is accomplished by improvingECU+ Upgrade Up to 644 HP 676 LB FT Gains: +102 HP & +94LB FT 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 offers incredible performance gains and rock solid daily driver reliability. The Aston Martin DBX is powered by by one of