{"product_id":"spool-fx-350-upgraded-high-pressure-fuel-pump-system-kia-stinger","title":"Spool FX-350 Upgraded High Pressure Fuel Pump System | KIA STINGER","description":"\u003ch3 data-start=\"301\" data-end=\"324\"\u003eWhat is the FX-350?\u003c\/h3\u003e\n\u003cp data-start=\"326\" data-end=\"658\"\u003eIntroducing the \u003cstrong data-start=\"342\" data-end=\"370\"\u003eSpool Performance FX-350\u003c\/strong\u003e, the next evolution of high-pressure fuel pump technology for the Kia Stinger 3.3T. Designed as a major step up from our previous FX-200, the FX-350 delivers significantly higher pressure, increased flow, and improved efficiency—unlocking the fueling headroom required for serious power.\u003c\/p\u003e\n\u003cp data-start=\"660\" data-end=\"1204\"\u003e\u003cstrong data-start=\"660\" data-end=\"688\"\u003eEnhanced Pressure \u0026amp; Flow\u003c\/strong\u003e\u003cbr data-start=\"688\" data-end=\"691\"\u003eThe FX-350 is engineered to deliver fuel at an impressive \u003cstrong data-start=\"749\" data-end=\"759\"\u003e35 MPa\u003c\/strong\u003e, a substantial increase over the factory pump’s limitations. Based on the fundamental relationship \u003cstrong data-start=\"859\" data-end=\"872\"\u003eQ = P × A\u003c\/strong\u003e (where flow rate increases with pressure across a fixed injector area), the added pressure dramatically increases injector throughput.\u003cbr data-start=\"1007\" data-end=\"1010\"\u003eIn real-world terms, the FX-350 allows your injectors to flow \u003cstrong data-start=\"1072\" data-end=\"1095\"\u003eup to 40% more fuel\u003c\/strong\u003e before reaching injection window limits—critical for higher boost, larger turbochargers, and ethanol blends.\u003c\/p\u003e\n\u003cp data-start=\"1206\" data-end=\"1609\"\u003e\u003cstrong data-start=\"1206\" data-end=\"1235\"\u003eImproved Fuel Atomization\u003c\/strong\u003e\u003cbr data-start=\"1235\" data-end=\"1238\"\u003eHigher rail pressure results in finer fuel atomization, which is especially important in direct-injected engines like the Stinger’s 3.3T. Smaller fuel droplets mix more evenly with air, producing a more complete and efficient burn. The result is \u003cstrong data-start=\"1484\" data-end=\"1552\"\u003emore power, improved combustion stability, and cleaner operation\u003c\/strong\u003e, particularly under high load and high boost conditions.\u003c\/p\u003e\n\u003cp data-start=\"1611\" data-end=\"1713\"\u003eThe FX-350 represents a no-compromise fueling solution for Stinger owners pushing beyond stock limits.\u003c\/p\u003e\n\u003chr data-start=\"1715\" data-end=\"1718\"\u003e\n\u003ch3 data-start=\"1720\" data-end=\"1743\"\u003eWhy do you need it?\u003c\/h3\u003e\n\u003cp data-start=\"1745\" data-end=\"1991\"\u003eThe \u003cstrong data-start=\"1749\" data-end=\"1835\"\u003efactory high-pressure fuel pump on the Kia Stinger 3.3T becomes a major bottleneck\u003c\/strong\u003e as power levels rise. Whether you’re running higher boost, upgraded turbochargers, or ethanol blends (E30–E85), stock fueling quickly runs out of headroom.\u003c\/p\u003e\n\u003cp data-start=\"1993\" data-end=\"2138\"\u003eThe FX-350 increases effective fueling capacity by \u003cstrong data-start=\"2044\" data-end=\"2057\"\u003eup to 90%\u003c\/strong\u003e, dramatically raising the ceiling of what the platform can support and enabling:\u003c\/p\u003e\n\u003cul data-start=\"2139\" data-end=\"2267\"\u003e\n\u003cli data-start=\"2139\" data-end=\"2163\"\u003e\n\u003cp data-start=\"2141\" data-end=\"2163\"\u003eLarger turbochargers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2164\" data-end=\"2190\"\u003e\n\u003cp data-start=\"2166\" data-end=\"2190\"\u003eHigher boost pressures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2191\" data-end=\"2220\"\u003e\n\u003cp data-start=\"2193\" data-end=\"2220\"\u003eIncreased ethanol content\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2221\" data-end=\"2267\"\u003e\n\u003cp data-start=\"2223\" data-end=\"2267\"\u003eSafer air-fuel ratios at high RPM and load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2269\" data-end=\"2343\"\u003eIf you’re chasing real power, this pump is not optional—it’s foundational.\u003c\/p\u003e\n\u003chr data-start=\"2345\" data-end=\"2348\"\u003e\n\u003ch3 data-start=\"2350\" data-end=\"2380\"\u003eWhat does the kit include?\u003c\/h3\u003e\n\u003cul data-start=\"2382\" data-end=\"2652\"\u003e\n\u003cli data-start=\"2382\" data-end=\"2448\"\u003e\n\u003cp data-start=\"2384\" data-end=\"2448\"\u003e\u003cstrong data-start=\"2384\" data-end=\"2448\"\u003e1× Spool Performance FX-350 upgraded high-pressure fuel pump\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2449\" data-end=\"2501\"\u003e\n\u003cp data-start=\"2451\" data-end=\"2501\"\u003e\u003cstrong data-start=\"2451\" data-end=\"2501\"\u003e1× Ethanol Content Monitor kit with mobile app\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2502\" data-end=\"2553\"\u003e\n\u003cp data-start=\"2504\" data-end=\"2553\"\u003e\u003cstrong data-start=\"2504\" data-end=\"2553\"\u003e1× Bosch-spec 10-micron high-flow fuel filter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2554\" data-end=\"2618\"\u003e\n\u003cp data-start=\"2556\" data-end=\"2618\"\u003e\u003cstrong data-start=\"2556\" data-end=\"2618\"\u003eUpgraded fuel lines and all required installation hardware\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2619\" data-end=\"2652\"\u003e\n\u003cp data-start=\"2621\" data-end=\"2652\"\u003e\u003cstrong data-start=\"2621\" data-end=\"2652\"\u003eSpool 10-micron filter unit\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2654\" data-end=\"2657\"\u003e\n\u003ch3 data-start=\"2659\" data-end=\"2690\"\u003eSpool 10-Micron Filter Unit\u003c\/h3\u003e\n\u003cp data-start=\"2692\" data-end=\"2991\"\u003eOur 10-micron fuel filter provides \u003cstrong data-start=\"2727\" data-end=\"2758\"\u003eindustry-leading filtration\u003c\/strong\u003e with \u003cstrong data-start=\"2764\" data-end=\"2795\"\u003eno measurable pressure drop\u003c\/strong\u003e on the low-pressure side. It plays a critical role in protecting both the high-pressure pump and injectors from debris, ensuring long-term reliability—especially when running ethanol-based fuels.\u003c\/p\u003e\n\u003cp data-start=\"2993\" data-end=\"3043\"\u003eHighly recommended for any upgraded fueling setup.\u003c\/p\u003e\n\u003chr data-start=\"3045\" data-end=\"3048\"\u003e\n\u003ch3 data-start=\"3050\" data-end=\"3083\"\u003eSpool Ethanol Content Monitor\u003c\/h3\u003e\n\u003cp data-start=\"3085\" data-end=\"3163\"\u003eThe \u003cstrong data-start=\"3089\" data-end=\"3129\"\u003eSpool Ethanol Content Analyzer (ECA)\u003c\/strong\u003e provides real-time monitoring of:\u003c\/p\u003e\n\u003cul data-start=\"3164\" data-end=\"3215\"\u003e\n\u003cli data-start=\"3164\" data-end=\"3194\"\u003e\n\u003cp data-start=\"3166\" data-end=\"3194\"\u003eIn-tank ethanol percentage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3195\" data-end=\"3215\"\u003e\n\u003cp data-start=\"3197\" data-end=\"3215\"\u003eFuel temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3217\" data-end=\"3494\"\u003eData is transmitted via \u003cstrong data-start=\"3241\" data-end=\"3273\"\u003eBLE 4.0 low-energy Bluetooth\u003c\/strong\u003e to the Spool mobile app, allowing seamless connection without interrupting other Bluetooth devices.\u003cbr data-start=\"3373\" data-end=\"3376\"\u003eAll fuel lines included in the kit feature \u003cstrong data-start=\"3419\" data-end=\"3461\"\u003eblack nylon-coated, braided PTFE cores\u003c\/strong\u003e and are \u003cstrong data-start=\"3470\" data-end=\"3493\"\u003e100% E85 compatible\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Yes Include the Spool Ethanol Content Analyzer","offer_id":45830709084220,"sku":"SP-FX35-STR-HHBG","price":2799.0,"currency_code":"USD","in_stock":true},{"title":"I have an existing Spool Ethanol Content Analyzer","offer_id":45830709116988,"sku":"SP-FX35-STR-EE-GGBB","price":2499.0,"currency_code":"USD","in_stock":true},{"title":"I would not be installing an Ethanol Content Analyzer","offer_id":45830709149756,"sku":"SP-FX35-STR-NE-BBBN","price":2499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/FX350-1-1014x912_a51fc468-78d2-4d82-8316-23ea13f017ef.jpg?v=1783393903","url":"https:\/\/rpm-racing.com\/products\/spool-fx-350-upgraded-high-pressure-fuel-pump-system-kia-stinger","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}