Aftercooling
Aftercooling is the term used to describe the process of cooling the air charge or forced-induction. The air charge produced by the supercharger is warmer than the input charge because of the physical action of air compression. VF performs continuous intake air temperature testing during dyno and street testing. As with most aftermarket supercharger systems, VF testing has shown that aftercooling is not required with induction pressures around 6psi. VF's BMW kits have been tested on like for like dynos to show similar power to competitors who run intercoolers and greater levels of boost.

VF sets up certain kits in multiple stages of increasing power and typically uses aftercooling with kits running greater than 6 psi. For its BMW systems VF has chosen to utilize air-to-water charge cooling for greater efficiency rather than air-to-air intercooling which is limited to cooling only while the car is in motion.