I like the Snow, but have had problems with using a ton of water/meth. Upgraded to MPG max from their stage III system, but its not cost effective. Personally, I like the egt probe so it only injects when temps get hot enough and not otherwise. There are two modes with one serving double duty 1) MPG/Horse Power mode and 2) EGT mode. The only downside on programming right now is you cannot select the Max boost in the MPG/HP mode. The system operates in MPG mode till a predetermined amount of boost (user selectable) is reached and it goes into HP mode. the other funny thing is that MPG mode is not the EGT control mode. They are two different modes! You must navigate a long menu to change between the two modes. If I want good mpg while towing, I also at the same time want EGT control FOR TOWING. I'd think most people would want good MPG while towing and keeping EGT in check at the SAME time.
With the max boost setting in HP, you don't know when it will reach max. I can set when to start injecting in mgp (3psi) and when to inject fully in mgp (20psi), and I can pick when it switches over to the hp mode (20psi), but who knows when its injecting 100% in the hp mode since I cannot set the max. They say its 8-10 psi or "SO". Well, If I make 34 psi boost, then its max "could be" 28 psi. I"d like 100% at 34 not 28. If I don't want it to go into hp mode until 26 psi, then it may never reach max injection at 34 psi. Couple limitations in the system that could easily be upgraded via software if they wanted to. They were very helpful in setting it up; good service. However, they did have some knowledge issues. When I was using the supplied MPG nozzle, like 225ml, it was injecting an entire gallon within 20 miles!!! They stated over and over again I have a leak, the nozzle cannot physically flow that much. Well, I did a capture test and put the nozzle in an empty bottle insted of the engine and at 20 miles, it was full. So every drip was being injected. I went with a 100ml or so nozzle which now, on a good day (not too often at all) I can hit 80 miles on a gallon. Still not cost effective in the MPG mode.
Also, you cannot control when the system starts injecting in the EGT mode. I think it is about 1000. However, if I run a hot tune, I might want it to inject earlier to stop the quick EGT rise. If I have a good tune and at WOT it never really get over 1300 degrees, then maybe I don't want to start injecting to like 1250 to save fluid. Unfortunately, the temp is not selectable.
I really don't think I should have spent a ton of $ to upgrade from the stage III to the Stage III with the MPG function since it doesn't work well and is not cost effective at all. If you go snow, I'd stay away from the MPG max system.
I do like the small controller. Stylish, replaces boost, egt, and injection amount gauges with one. Customer service is also great.