The stage 3 controller fromSnow Performance stands as themost advanced water-methanol injection controller on the planet. Utilizing boost/fuel injector pulse width to command injection, the stage 3will 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 stage3 commands 2 nozzles independently of one another to ensure exact amounts of water-methanol is injected at all engine load states of the vehicle. If you are looking for the most sophisticated water-meth controller on the market look no further than the Snow Performance Stage 3.