{"product_id":"radium-fpr-d-fuel-pressure-regulator-damper-universal-20-1528-01","title":"Radium FPR-D Fuel Pressure Regulator Damper | Universal (20-1528-01)","description":"\u003cp\u003e\u003cstrong\u003eTwo parts in one body, which is one less component and one less set of fittings.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering FPR-D fuel pressure regulator damper\u003c\/strong\u003e consolidates a fully adjustable high performance EFI fuel pressure regulator with a \u003cstrong\u003ebuilt-in fuel pulse damper\u003c\/strong\u003e into a single high flow package. The damper smooths the noisy fuel systems that suffer pulsing from injectors opening and closing and from the pump itself.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStable rail pressure without plumbing a separate damper\u003c\/li\u003e\n\u003cli\u003ePressure set by hand on the knob, no tools\u003c\/li\u003e\n\u003cli\u003eMounting in any orientation, including upside down\u003c\/li\u003e\n\u003cli\u003eA vacuum port that swivels 360 degrees to point wherever you need\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRA-series adjustable regulator with integrated pulse damper\u003c\/li\u003e\n\u003cli\u003eSingle stainless steel return orifice generating laminar flow for stability control\u003c\/li\u003e\n\u003cli\u003e10AN ORB (7\/8in-14) inlet (side) and outlet (bottom) ports\u003c\/li\u003e\n\u003cli\u003e1\/8in NPT auxiliary port for a pressure gauge, with plug included\u003c\/li\u003e\n\u003cli\u003eTwo M6x1mm threaded mounting holes plus laser cut anodized mounting plate\u003c\/li\u003e\n\u003cli\u003e360 degree swiveling vacuum reference port, double O-ring sealed\u003c\/li\u003e\n\u003cli\u003eMinimum pressure 18.5psi (1.3bar); maximum limited by your pump's relief valve or controller\u003c\/li\u003e\n\u003cli\u003eGreen anodized adjustment knob\u003c\/li\u003e\n\u003cli\u003eSuits all gasoline types plus methanol, ethanol, and E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCheck your plumbing before ordering: the FPR-D cannot be used in a dead-head fuel system.\u003c\/strong\u003e It has a single inlet and a single outlet (return) port, so it \u003cstrong\u003emust be plumbed after the fuel rail\u003c\/strong\u003e. If your system dead-heads at the rail, the Radium MPR multi-port regulator is the part you want instead.\u003c\/p\u003e\n\u003cp\u003eThe integrated damper works best with a \u003cstrong\u003ebase static pressure of 40 to 105psi\u003c\/strong\u003e, measured with the pump running and no vacuum line connected. Dynamic pressure outside that range is fine provided the vacuum and boost reference line is connected; otherwise that reference is usually plugged.\u003c\/p\u003e\n\u003cp\u003eFour interchangeable 10-32 vacuum fittings are supplied: a 5mm barb suiting 4mm, 5mm, and 6mm vacuum hose; a 3AN male adapter; a 1\/4in push-to-connect for hard plastic tubing; and a vacuum plug for maintaining constant non-dynamic pressure, which is what returnless systems need. Radium recommends a wicking medium-strength thread locker when fitting the vacuum fitting.\u003c\/p\u003e\n\u003cp\u003eOne thing worth knowing before you call anyone: \u003cstrong\u003ea rapid drop in fuel pressure after shutoff is normal\u003c\/strong\u003e for aftermarket regulators of any brand, because large sealing surfaces cannot seal perfectly at rest. Pressure resets as soon as the pump runs. Long cranking or delayed pressure build is a different problem, usually the feed hose draining back to the tank through a pump module leak or a missing check valve.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMain rotating assembly with damper\u003c\/li\u003e\n\u003cli\u003eMounting bracket with M6x1mm hardware\u003c\/li\u003e\n\u003cli\u003e5mm barbed vacuum fittings (x2), vacuum plug fittings (x2), 1\/4in push-to-connect fittings (x2), 3AN male vacuum fittings (x2)\u003c\/li\u003e\n\u003cli\u003e6AN male adapters (x2) and 8AN male adapters (x2)\u003c\/li\u003e\n\u003cli\u003e1\/8in NPT port plug\u003c\/li\u003e\n\u003cli\u003eVacuum hose Y-adapter and 5\/32in ID vacuum hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal, any EFI fuel system with a return line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCannot be used in a dead-head fuel system\u003c\/strong\u003e; must be plumbed after the fuel rail. Use the MPR for dead-head plumbing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDampers CANNOT be used with mechanical fuel pumps or direct injection.\u003c\/strong\u003e Those create pressure pulses too strong for the diaphragm and will rupture it in short order.\u003c\/li\u003e\n\u003cli\u003eDamper base static pressure requirement: 40 to 105psi\u003c\/li\u003e\n\u003cli\u003eUse a wicking medium-strength thread locker on the vacuum fitting\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43704168185923,"sku":"20-1528-01","price":284.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-1528-01_1200px_wide.jpg?v=1787405872","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-fpr-d-fuel-pressure-regulator-damper-universal-20-1528-01","provider":"Tuned by Shawn","version":"1.0","type":"link"}