Snow Performance Diesel Stage 3 Water/Methanol MPG-MAX ControllerThe MPG MAX controller from Snow Performance stands as the most advanced water methanol injection controller on the planet. Utilizing boost EGTs to command injection, the MPG MAX will create a 2D MAP to calculate load of the engine and inject precise amounts of water methanol exactly when your vehicle needs it. Taking it one step further, the MPG MAX commands 2 nozzles independently of one another to ensure exact amounts of water methanol is injected