Perrin Performance Pwi-2 Water/methanol Injection System on 2040-parts.com
Powder Springs, Georgia, US
You are bidding on a New PERRIN Performance PWI-2 Water/Methanol Injection System The PWI-2 injection system is designed to effectively suppress detonation that is 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 supercharger. This is done by injecting a fine mist of a mixture of water and methanol into the intake charge. Water has a high latent heat contact and methanol has a high octane rating which makes them extremely effective at controlling the onset of detonation. Installing and using a water/methanol injection system is like running expensive race fuel all the time and not having to pay the high cost per gallon associated with race fuel. Most applications will see gains in excess of 20WHP once tuned. In addition you will have increased safety and your engine will enjoy longevity. You need this water/methanol injection system if you have an intercooler that is poorly mounted or small, like found on the WRX, Legacy GT Turbo, Mini Cooper S, Mazdaspeed 6, Audi/VW 1.8T, Mitsubishi Eclipse or any car equipped with a turbo or supercharger with no intercooler. Water injection is a generic term that refers to injecting a water/methanol mixture into the engine. Water to methanol mixtures can vary to create different results. Water is used for in-cylinder cooling and methanol is used for its high octane rating and its ability to remove heat. Water will not burn but is sucks up lots of hear from the combustion chamber. Injecting water by itself will cause a loss in power if the ECU is not retuned for it. Methanol does burn, and has a very high octane rating. The in cylinder cooling from water and the high octane from the methanol create a mixture that will significantly reduce the onset of detonation. Tuners are looking for water/methanol injection because it doesn't limit them to boost level had by low octane pump fuels. A safe mixture is 50/50 mix as it provides the biggest benefit of cooling and detonation control. Reducing detonation/knock can increase boost pressure, increase ignition time, and lean out the fuel mixture. This system includes everything you need. Simply provide a bucket of distilled water. STI, EVO and Mini's have factory installed reservoirs. With the dash mounted control and display you can activate or deactivate the system as well as tune the kit on the fly. The system brain uses trim pots to adjust flow, and injection to start. Easy to use wire terminal that allows for a clean easy install.
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