i ran the stage 3 snow kit on my truck with the old set up and when the 2nd stage would spray u could hear the motor kick up more rpm with out moving your foot, and deff helped egts for sure i didn't go crazy into making meth just ran -20 washer fluid in it
Php just dynoed one of their employee's trucks with AIS's kit and saw about a 40hp gain using -20 windshield washer fluid. He was spraying two 7 gph nozzles.
Like Tyler said....I noticed the same thing. Rpms kicked up and so did boost when it started to inject. Definite power gain I noticed I love my snow stage 2 kit. Been running it for about 7 years. I only run the winter blend (-20) washer fluid.