
I am in the process of evaluating several ‘bolt on’ performance changes for my DB9. Ultimately I am hoping to achieve power levels similar to a DBS (they are essentially just the same engine). In this article I am testing the changes that come with fitting a Velocity AP GT4 Airbox Delete Kit (check out my other article on how to fit one). This is a popular modification that promises less weight and better breathing to make more power. Its that last claim we are testing here. Continue reading “Dyno Testing Results After Installing a Airbox Delete Kit in an Aston Martin DB9”