{"product_id":"radium-engineering-fpr-spring-wide-range-use-with-radium-mpr-dmr-and-fst-r","title":"Radium Engineering Wide-Range FPR Spring – MPR\/DMR\/FST-R","description":"\u003cp\u003eThe \u003cstrong\u003eRadium Engineering FPR Spring- Wide Range (Use with Radium MPR, DMR, and FST-R)\u003c\/strong\u003e is engineered as a purpose-built solution for enthusiasts who want the surrounding system to be easier to package, service and trust under hard use.\u003c\/p\u003e\u003ch3\u003eWhy This Upgrade Matters\u003c\/h3\u003e\u003cp\u003eFuel pressure control is fundamental to injector consistency and repeatable tuning. A regulator must manage return flow while maintaining the pressure strategy required by the injectors and ECU, particularly as pump flow and engine demand increase.\u003c\/p\u003e\u003ch3\u003eTechnical Notes\u003c\/h3\u003e\u003cp\u003eBase pressure should be set with the system configured as required by the engine management strategy. Pump flow affects the regulator' operating range, and boosted applications may require a manifold-reference connection where the specific regulator supports it.\u003c\/p\u003e\u003ch3\u003eRadium Part Number\u003c\/h3\u003e\u003cp\u003e\u003ccode\u003eRAD18-0046\u003c\/code\u003e\u003c\/p\u003e\u003ch3\u003eEnthusiast Notes\u003c\/h3\u003e\u003cp\u003eFor tuned cars, stable pressure is part of stable fueling. Set the regulator with a gauge or sensor and validate pressure behavior under load rather than assuming the static setting tells the whole story.\u003c\/p\u003e\u003ch3\u003eBefore Ordering\u003c\/h3\u003e\u003cp\u003eConfirm required base-pressure range, total pump flow, feed\/return port sizes and whether vacuum\/boost reference is required. A regulator should be sized as part of the complete fuel system.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":48049112350970,"sku":"RAD18-0046","price":9.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/34f5a6b0be0cc2a1127582b5a33797ecL.jpg?v=1764569132","url":"https:\/\/lgcracing.com\/products\/radium-engineering-fpr-spring-wide-range-use-with-radium-mpr-dmr-and-fst-r","provider":"Legacy Racing","version":"1.0","type":"link"}