Water/methanol injection system with everything needed to start making big HP! Includes: 150 psi high volume pump, adjustable boost pressure switch, 2-qt. Reservoir, two nozzles sized to your RWHP and boost levels, Bosch relay, all the electrical parts, fittings, tubing etc. to install - a complete kit made with quality, proven components Includes Stage-1 plus: 1. An upgraded 150psi pump for incredible atomization. 2. Variable Controller that varies the quantity injected vs. MAF signal. This allows maximum power at all RPM/boost levels as just the right amount is injected at all times. Features include adjustments for onset and full quantity based on MAF voltage.