{"product_id":"evil-energy-fuel-pressure-regulator-30-140-psi-adjustable-red-an10-return-with-gauge","title":"EVIL ENERGY Fuel Pressure Regulator 30–140 PSI Adjustable Red — AN10 Return with Gauge","description":"\u003cstrong\u003eEVIL ENERGY's adjustable EFI fuel pressure regulator is a billet 6061-T6 aluminum unit that lets you set and maintain precise fuel pressure between 30–140 PSI for gasoline and ethanol applications.\u003c\/strong\u003e\n\n\u003cp\u003eThis precision fuel pressure regulator is built for tuned and stock electronic fuel-injected engines that require a reliable, adjustable supply pressure. Machined from 6061-T6 aluminum and finished in red, the regulator includes a gauge, pre-installed and replacement springs to cover two pressure bands, and a full set of AN fittings so you can integrate it into most EFI systems. The unit accepts vacuum reference and an instrument port for diagnostics, and it uses ORB-style AN10 ports for feed and return plumbing.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I change and set the fuel pressure?\u003c\/h3\u003e\n\u003cp\u003eAdjusting pressure is done with the top set screw and by swapping the internal spring. The pre-installed spring provides a 30–80 PSI range; swap to the included replacement spring for an 80–140 PSI range. Always initial-set with a fuel pressure gauge and fine-tune under operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTurn clockwise to increase pressure, counterclockwise to decrease.\u003c\/li\u003e\n  \u003cli\u003eUse the supplied pressure gauge at the 1\/8\" NPT instrument port for readings.\u003c\/li\u003e\n  \u003cli\u003eSwap springs for the higher 80–140 PSI band if needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich fuels and engine systems is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe regulator works with gasoline, E85 and other alcohol-based fuels used in EFI systems but is not rated for diesel. Note that nylon braided hoses are not compatible with E85 — use fuel-rated lines approved for ethanol blends. This unit is intended for return-style EFI set-ups that can utilize an AN10 return port.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible: gasoline, E85, alcohol\/ethanol blends.\u003c\/li\u003e\n  \u003cli\u003eNot compatible: diesel fuel and nylon braided E85 lines.\u003c\/li\u003e\n  \u003cli\u003eDesigned for return-style electronic fuel injection systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fittings and hardware are included for installation?\u003c\/h3\u003e\n\u003cp\u003eThe package ships with the regulator, a pressure gauge, an extra spring, an ORB plug and a selection of AN adapter fittings to match different feed sizes. Also included are an Allen key and sealant tape to help seal the NPT gauge port during installation. These accessories simplify plumbing the regulator to most aftermarket fuel rails or pump setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: pressure gauge, replacement spring, AN10 ORB plug.\u003c\/li\u003e\n  \u003cli\u003eAdapters: three AN10-to-AN6, three AN10-to-AN8, three AN10-to-AN10 fittings.\u003c\/li\u003e\n  \u003cli\u003eTools\/supplies: Allen key and thread sealant tape for gauge port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should this be installed and maintained for best results?\u003c\/h3\u003e\n\u003cp\u003eProfessional installation is recommended to ensure correct plumbing and sealing, especially when working with pressurized fuel lines. Use thread sealant on the NPT gauge port, check all ORB fittings for proper torque, and test under idle and load to confirm stable pressure. Regular inspections for leaks and hose compatibility with ethanol fuels will extend service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse thread sealant tape on the NPT gauge port as supplied.\u003c\/li\u003e\n  \u003cli\u003eTorque AN\/ORB fittings to manufacturer specs; inspect for leaks.\u003c\/li\u003e\n  \u003cli\u003eVerify fuel-line materials are ethanol-compatible when using E85.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Tuners, performance enthusiasts, and shops upgrading or building EFI systems who need a durable, adjustable regulator capable of precise pressure control from 30 to 140 PSI. It’s a good match for custom fuel rails, high-flow pump systems, and vehicles running ethanol blends, provided installation follows best-practice plumbing and safety steps.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this regulator be used with E85?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it supports E85 and other alcohol-based fuels, but avoid nylon braided lines with E85.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What pressure ranges are available out of the box?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Pre-installed spring covers 30–80 PSI; included replacement spring extends range to 80–140 PSI.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":67585131675833,"sku":"B0DM8VXRS5","price":167.27,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/evil-energy-regulator-front-view_4f777db1-ab2b-427e-81f2-f93f9652b055.jpg?v=1790468420","url":"https:\/\/redleafauto.ca\/products\/evil-energy-fuel-pressure-regulator-30-140-psi-adjustable-red-an10-return-with-gauge","provider":"Redleaf Auto","version":"1.0","type":"link"}