{"product_id":"bmw-s58-auxiliary-split-fuel-system-for-port-injection","title":"Spool BMW S58 Auxiliary Split Fuel System for Port Injection","description":"\u003cp\u003eComplete auxiliary fuel system that separates the S58 direct-injection and port-injection fuel supplies for more stable, boost-referenced fueling at higher power levels.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIndependent direct-injection and port-injection fuel feeds\u003c\/li\u003e\n\u003cli\u003eRetains the OEM fuel-pump top hat using precision-machined adapter fittings\u003c\/li\u003e\n\u003cli\u003ePlug-and-play harness compatibility with the MOTIV ReFlex controller\u003c\/li\u003e\n\u003cli\u003eDual Walbro 450 pumps supplied as standard\u003c\/li\u003e\n\u003cli\u003eOptional dual Walbro 525 configuration for higher fuel demand\u003c\/li\u003e\n\u003cli\u003eTriple-layer PTFE fuel plumbing with stainless reinforcement and nylon protection\u003c\/li\u003e\n\u003cli\u003eCompact boost-referenced fuel-pressure regulator\u003c\/li\u003e\n\u003cli\u003eOEM-friendly engine-bay and fuel-tank packaging\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Solid-state PWM relay harnesses are separate options. Confirm pump choice, port-injection controller, injector size and base fuel pressure with the tuner before installation.\u003c\/p\u003e","brand":"Spool Performance","offers":[{"title":"Dual Walbro 450 with Check Valves","offer_id":49861837717746,"sku":"SP-S58AUXF450","price":2830.0,"currency_code":"AUD","in_stock":true},{"title":"Dual Walbro 525 with Check Valves","offer_id":49861837750514,"sku":null,"price":3262.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0845\/4825\/5986\/files\/69d94785-f86c-42c8-a5ef-84cf3c609def.png?v=1785442971","url":"https:\/\/mlab-boostandtune.com\/products\/bmw-s58-auxiliary-split-fuel-system-for-port-injection","provider":"M Lab by Boost \u0026 Tune","version":"1.0","type":"link"}