I know it's an old thread but I had the Aquamist HSF3 on my Focus ST and it is a great kit. The really nice thing is that it has the ability to read FIDC and not just boost. I had mine setup to read 70/30 FIDC/boost. Another great feature is the failsafe and gauge. It splices into the EBC wiring. When activated it cuts power to the EBC kicking you down to wastegate spring pressure. But it has a dummy resistor so you won't throw a CEL.
All of this was on a Focus ST though. I just got the SHO 2 days ago so I haven't been able to poke around on it much. I want to check out the boost control and the wiring to see what it would take. But I do plan on getting the HSF4 and setting it up for direct-port as well. 1 check valve jet into each cylinder runner. It's just going to be a bit due to a wedding and house purchase. But when I do I will start a thread with plenty of pics. Just wanted to bring some attention to a great methanol system. Also Richard, the designer, is very helpful and easy to work with. We emailed back and forth frequently when I was installing the system. There is a really good thread over on another forum I'm just not sure of the rules here. I don't want to get in trouble for posting a link to another forum. I also have plenty of pics if anyone is interested.
