Check the listing for details. Holley Efi 557-100 Water/Methanol Injection Pump. Condition: New, Made in CA. Listed at 346.47 USD. Water/Methanol Injection Pump; 3/8 in. - 18NPT Inlet/Outlet; 7.5A At 140 psi.; 145 psi. Max Pressure; Free & Fast Shipping Amazing Service Hassle Free Returns 24/7 Online Support K E-Sales Home About Us Shipping Returns Contact Us Menu categories All eBay Motors Parts & Accessories Newsletter Add our store to your Favorites and receive our e-mail newsletters about new items and special promotions. Sign Up Holley EFI 557-100 Water/Methanol Injection Pump description Water/Methanol Injection Pump Water/Methanol Injection Pump; 3/8 in. - 18NPT Inlet/Outlet; 7.5A At 140 psi.; 145 psi. Max Pressure;SPECIFICATIONS:Amperage Draw: 7.5Inlet Size: 0.375 in. - 18 NPTMaximum PSI: 145Outlet Size: 0.375 in. - 18 NPTWARNING CA Proposition 65: NoFEATURES:Water/Methanol Injection PumpInstallation KitTake your forced induction ride to the next level with a Holley water/meth injection system! Integrated into the Holley HP and Dominator EFI Systems is the capability to control water/methanol injection allowing you safely run on lower octane pump gas!What makes the Holley water/methanol system unique and light years ahead of competitive systems is that the solenoid flow has been characterized within the ECU. Program in an exact flow amount into the software, and that flow is injected into the engine. This is critical to ensure that neither too little (causing engine damage), nor too much (causing large loss in power) water/methanol mix is injected into the engine. Select the exact percentage of water/methanol mix to be delivered vs. the percentage of fuel flow present, at any RPM and load. This makes tuning a very simple and accurate process. Holley EFI can be configured to drive up to two solenoids. All components are designed to be compatible with water/methanol mix of up to 50 percent methanol. The Water/Meth solenoids are run by an injector driver output. If an extra output is not available (as would be the case on a HP ECU driving 8 injectors), PN 554-113 can be purchased that can be driven by a low side PWM output.Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Sprint Cup Series(TM) team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star race. But that's not all. The world's best street machine builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It's the easiest, most refined, feature-rich system that money can buy. But, don't take our word for it, see what the best are saying about Holley EFI! categories All eBay Motors Parts & Accessories Newsletter Add our store to your Favorites and receive our e-mail newsletters about new items and special promotions. Sign Up Payment shipping return About us contact us Payment All orders must be paid for via PayPal. 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