{"product_id":"spool-fx-350-upgraded-high-pressure-pump-gen-1-b58","title":"Spool FX-350 Upgraded High Pressure Pump [Gen 1 B58]","description":"\u003cp data-start=\"165\" data-end=\"531\"\u003e\u003cstrong data-start=\"165\" data-end=\"186\"\u003eSpool Performance\u003c\/strong\u003e is proud to introduce the \u003cstrong data-start=\"213\" data-end=\"246\"\u003eFX350 High-Pressure Fuel Pump\u003c\/strong\u003e, a core upgrade in our fuel system lineup engineered for high-output BMW B58 applications. The FX350 builds on our proven pump architecture to deliver a meaningful increase in fuel delivery across the entire operating range, making it ideal for ethanol blends and larger turbo setups.\u003c\/p\u003e\n\u003cp data-start=\"533\" data-end=\"787\"\u003ePaired with our \u003cstrong data-start=\"549\" data-end=\"575\"\u003eIFX Gen 1 DI injectors\u003c\/strong\u003e, the FX350 enables significantly higher direct-injection fueling capability, opening the door to DI-focused high-horsepower builds on the BMW B58 platform while maintaining OEM-level integration and reliability.\u003c\/p\u003e\n\u003chr data-start=\"789\" data-end=\"792\"\u003e\n\u003ch3 data-start=\"794\" data-end=\"816\"\u003eWhat is the FX350?\u003c\/h3\u003e\n\u003cp data-start=\"818\" data-end=\"1125\"\u003eThe \u003cstrong data-start=\"822\" data-end=\"831\"\u003eFX350\u003c\/strong\u003e is a high-output, upgraded high-pressure fuel pump designed for enthusiasts pushing beyond the limits of the factory fuel system. It offers a substantial increase in flow over stock, allowing for higher ethanol content, increased boost, and improved fueling stability on upgraded turbo setups.\u003c\/p\u003e\n\u003cp data-start=\"1127\" data-end=\"1406\"\u003eThe pump is fully \u003cstrong data-start=\"1145\" data-end=\"1163\"\u003eE85 compatible\u003c\/strong\u003e and \u003cstrong data-start=\"1168\" data-end=\"1190\"\u003e100% plug-and-play\u003c\/strong\u003e, requiring no cutting, splicing, or permanent modifications. Installation is straightforward and OEM-style, making it an ideal solution for performance builds that demand more fueling without unnecessary complexity.\u003c\/p\u003e\n\u003chr data-start=\"1408\" data-end=\"1411\"\u003e\n\u003ch3 data-start=\"1413\" data-end=\"1443\"\u003eAre tune changes required?\u003c\/h3\u003e\n\u003cp data-start=\"1445\" data-end=\"1652\"\u003eYes. The upgraded pump \u003cstrong data-start=\"1468\" data-end=\"1504\"\u003edoes require calibration changes\u003c\/strong\u003e. These changes must be applied \u003cstrong data-start=\"1536\" data-end=\"1567\"\u003ebefore starting the vehicle\u003c\/strong\u003e with the FX350 installed to prevent potential damage and avoid voiding the warranty.\u003c\/p\u003e\n\u003cp data-start=\"1654\" data-end=\"1996\"\u003eSpool Performance can provide calibration guidance to your existing tuner or help connect you with experienced tuners familiar with our high-pressure fuel pumps. While Spool Performance is strictly a hardware manufacturer and does not provide custom tuning, we are happy to support your tuner with any technical questions related to the pump.\u003c\/p\u003e\n\u003chr data-start=\"1998\" data-end=\"2001\"\u003e\n\u003ch3 data-start=\"2003\" data-end=\"2042\"\u003eLow-Pressure Fuel Pump Requirements\u003c\/h3\u003e\n\u003cp data-start=\"2044\" data-end=\"2337\"\u003eProper low-pressure fueling is \u003cstrong data-start=\"2075\" data-end=\"2087\"\u003ecritical\u003c\/strong\u003e for the correct operation and long-term durability of high-pressure pumps and DI injectors. The high-pressure pump relies on fuel for lubrication through controlled internal leakage. Insufficient low-side supply can result in piston and bore damage.\u003c\/p\u003e\n\u003cp data-start=\"2339\" data-end=\"2584\"\u003eDamage caused by low-pressure fuel starvation is detectable and will result in \u003cstrong data-start=\"2418\" data-end=\"2444\"\u003evoided warranty claims\u003c\/strong\u003e. When planning your build, ensure the low-pressure fuel system is appropriately upgraded to support the FX350 and your overall power goals.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"INCLUDE WIRELESS ETHANOL ANALYZER KIT [+$349] \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650248310,"sku":"SP-FX-200-B58-YENFNL656","price":2348.0,"currency_code":"USD","in_stock":true},{"title":"INCLUDE WIRELESS ETHANOL ANALYZER KIT [+$349] \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650281078,"sku":"SP-FX-200-B58-YENFYL879","price":2447.0,"currency_code":"USD","in_stock":true},{"title":"INCLUDE WIRELESS ETHANOL ANALYZER KIT [+$349] \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650313846,"sku":"SP-FX-200-B58-YEYFNL456","price":2497.0,"currency_code":"USD","in_stock":true},{"title":"INCLUDE WIRELESS ETHANOL ANALYZER KIT [+$349] \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650346614,"sku":"SP-FX-200-B58-YEYFYL546","price":2596.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL INSTALL MY EXISTING SPOOL WIRELESS ETHANOL ANALYZER KIT \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650379382,"sku":"SP-FX-200-B58-EENFNL654","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL INSTALL MY EXISTING SPOOL WIRELESS ETHANOL ANALYZER KIT \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650412150,"sku":"SP-FX-200-B58-EENFYL262","price":2098.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL INSTALL MY EXISTING SPOOL WIRELESS ETHANOL ANALYZER KIT \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650444918,"sku":"SP-FX-200-B58-EEYFNL2163","price":2148.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL INSTALL MY EXISTING SPOOL WIRELESS ETHANOL ANALYZER KIT \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650477686,"sku":"SP-FX-200-B58-EEYFYL546","price":2247.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL NOT INSTALL ANY ETHANOL ANALYZER \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650510454,"sku":"SP-FX-200-B58-NENFNL123","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL NOT INSTALL ANY ETHANOL ANALYZER \/ NO DO NOT ADD 10 MICRON FILTER UNIT \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650543222,"sku":"SP-FX-200-B58-NENFYL233","price":2098.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL NOT INSTALL ANY ETHANOL ANALYZER \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ NO I WILL MODIFY MY EXISTING FUEL LINE","offer_id":43200650575990,"sku":"SP-FX-200-B58-NEYFNL122","price":2148.0,"currency_code":"USD","in_stock":true},{"title":"DO NOT INCLUDE- I WILL NOT INSTALL ANY ETHANOL ANALYZER \/ YES ADD 10 MICRON FILTER UNIT [+$149] \/ INCLUDE STAINLESS STEEL HIGH PRESSURE FUEL LINE [+99]","offer_id":43200650608758,"sku":"SP-FX-200-B58-NEYFYL656","price":2247.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/5520\/4214\/files\/spoolhpfp.png?v=1773882587","url":"https:\/\/octanegarage.biz\/products\/spool-fx-350-upgraded-high-pressure-pump-gen-1-b58","provider":"Octane Garage","version":"1.0","type":"link"}