Terry brought his M3 to us with a VF Stage 1 Supercharger kit that VF Engineering intalled earlier this year. He decided to switch to our HPF turbo system shortly thereafter. This was our 5th such swap so I documented the before and after drivability differences along with a VBox and Dyno comparison for Terry and others to see. TABLE OF CONTENTS: --------------------------- 00:14 VF Stage 1 - Drivability Testing 04:24 VF Stage 1 - VBox Runs 10:18 VF Stage 1 - Drivability Testing 13:33 VF Stage 1 - Dyno Pulls 21:03 VF Stage 1 - Cold Start 22:16 HPF Stage 2 - Cold Start 24:16 HPF Stage 2 - Drivability 32:02 HPF Stage 2 - VBox Runs 35:54 HPF Stage 2 - Dyno Pulls