The AEM Water/Methanol injection for forced induction (turbocharged or supercharged) Gas & Turbo Diesel applications is a proven means for effectively reducing engine inlet air temperatures and enhancing combustion efficiency whilst suppressing harmful detonation. This allows for reliable increase in boost and advance timing to deliver more power with less effort. AEM's Water/Methanol Injection Kits utilize robust hardware and deliver more advanced features than any other comparably priced Water/Methanol injection system. Water/Methanol for all Boost Levels AEM Electronics offers two different Water/Methanol controller designs for HD and Turbo Diesel One is a Boost Dependent HD Controller and has an on-board MAP sensor (up to 40 PSI) with a molded in nipple for a boost hose pickup (PN 30-3301 with 5 gallon tank, PN 30-3303 tank-less). The second HD controller features a multiple input design. The Multi-Input controller can be programmed to work with a 0-5v signal from an external MAP sensor for forced induction applications running over 40 PSI of boost, or with a frequency based Injector Duty Cycle (IDC) signal, frequency-based mass airflow (MAF), or 0-5v voltage-based MAF signal (PN 30-3351 with 5 gallon tank, PN 30-3352 tank-less).