The VF Engineering kit comes with an air/water cooler eliminating the need of having meth. The new cooling system does the job well. No need to run meth injection.
We have a VF620 on its way to us in Florida and another about to be ordered. Both customers steered away from meth and really like the added cooling system on the VF kit.
Are you curious because of the heat or you just want to add the meth system to the supercharger?