The Progressive part of the PWI-1

The PERRIN PWI-1 system stands out amongst competitive systems because of our progressive hydro pump. The PERRIN hydro pump delivers fluid into the system in increasing increments to match fuel volumes. Non-Progressive, less expensive water systems are restricted to a fixed volume of water that can be delivered. These systems suffer from too much water at lower RPMS and not enough water at higher. This can cause a loss in power, at both lower RPMs (too much water) and high RPMS (no detonation control) The PWI-1 system reads your engines fuel injector duty cycle to monitor the amount of fuel flow insuring a 10-20% mixture of water vs. fuel over the entire RPM band. The PERRIN PWI-1 will create more horsepower and allow a safer running engine!

The PERRIN PWI-1 water/methanol injection system is designed to suppress detonation caused by high intake charge temperatures and or when the effective compression ratio has been taken beyond the auto ignition point (of fuel) by increased boost from a turbo or a supercharger. To suppress Detonation, a fine mist of a mixture of water and methanol is injected into the intake charge. Water, with its high latent heat content, and methanol, with its high octane rating, are extremely effective at controlling the onset of detonation. From this you can gain power from increasing timing, or leaning the engine out, or simply add a large margin of safety to your engine.

By adding an extremely fine mist of water you can effectively add an additional intercooler to your vehicle. This lowers charge temperatures, reduces any tendency for detonation, and thus greatly improves horsepower and torque. Most clients will see gains in excess of 20WHP once tuned for! All while increasing safety and longevity of the engine.

Cars that can benefit significantly from the PWI-1 are cars with poorly mounted, or small intercoolers, like the WRX, Legacy GT turbo, Mini cooper S, Mazdaspeed 6, Audi/VW 1.8T cars, Mitsubishi Eclipse or cars with turbo kits or supercharger kits with no intercoolers. But this does not limit the PWI-1’s ability to increase HP on cars with aftermarket intercoolers, where pump gas is being pushed to its limit of detonation.

The PERRIN™ Performance PWI-1 Water Injection System includes everything you need for a professional installation. Simply provide your own bucket of water! (STI, EVO and MINI's all have factory installed reservoirs.) With a dash mounted control and display you can activate or deactivate the system as well as monitor the water level, flow and perform tests of the entire kit. Additionally, the PWI-1 brain uses trim pots to adjust flow, and injection start. The brain incorporates several safety functions, which can detect when the nozzle is blocked, or water is low in tank. If this happens the PWI-1 brain can be set to cut boost, switch to a different map (ECU dependent), or turn on a light or any number of things you can come up with. These are features simply not found on other water injection systems. Easy to assemble and install. Includes hoses, mounting hardware, instructions, and tuning tips.

Here's how it works: Water is extracted from a water tank through the electromagnetic pump straight to the intake charge. The water vaporizes in the combustion chamber, drawing out unwanted heat. This in turn controls detonation, and slows the burn rate of fuel, basically turns your pump fuel into race fuel.

• Installation Instructions

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