This kit uses the unique GM MAF frequency Hz output signal or a 0-5 volt signal. Perfect for naturally aspirated applications and forced induction applications that build boost quickly at lower rpms. This allows for accurate delivery of water-methanol and allows the most cooling and performance improvement over the widest range. More power and driveability is the result. Kit includes: SHO (Special High Ouput) pump, 3-quart reservoir, digital variable controller, nozzles to cover a wide range of horsepower, all required hardware needed for installation.