As I prepare for the upcoming Texas heat in a few months, I have been researching possible meth injection system. This will be for cooling purposes only, not for a tune with meth. That being said, I noticed that the Aquamist HFS-3 and 4 system being recommended a lot, but it's not cheap and seems to be more beneficial for those tuned for meth. The HFS controller looks to be the biggest benefit of the system and what makes it one of the best. But if I'm just using the system for cooling, is a controller that advanced really necessary? I like the plug and play format as well, almost makes it idiot proof.