{"product_id":"a90-a91-toyota-supra-auxiliary-split-fuel-system","title":"A90\/ A91 Toyota Supra Auxiliary Split Fuel System","description":"\u003ch2 data-start=\"180\" data-end=\"245\"\u003eSpool Performance A90 \/ A91 Toyota Supra Auxiliary Fuel System\u003c\/h2\u003e\n\u003cp data-start=\"247\" data-end=\"501\"\u003eThe \u003cstrong data-start=\"251\" data-end=\"317\"\u003eSpool Performance A90 \/ A91 Toyota Supra Auxiliary Fuel System\u003c\/strong\u003e is designed for Supra owners pushing beyond the limits of the factory fuel system who want a solution that’s properly engineered, easy to install, and built for long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"503\" data-end=\"778\"\u003eBuilt around the B58 platform used in the Supra, this system focuses on correct fuel architecture and real-world usability. Every component and layout choice was made to deliver stable, predictable fueling at higher power levels while maintaining clean OEM-level integration.\u003c\/p\u003e\n\u003ch3 data-start=\"780\" data-end=\"832\"\u003eWhy a Properly Split DI + PI Fuel System Matters\u003c\/h3\u003e\n\u003cp data-start=\"834\" data-end=\"1008\"\u003eAs power levels increase on the B58-powered Supra, fueling challenges typically come from \u003cstrong data-start=\"924\" data-end=\"1007\"\u003esupplying direct injection (DI) and port injection (PI) from the same fuel feed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1010\" data-end=\"1038\"\u003eWhen DI and PI share a feed:\u003c\/p\u003e\n\u003cul data-start=\"1040\" data-end=\"1360\"\u003e\n\u003cli data-start=\"1040\" data-end=\"1146\"\u003e\n\u003cp data-start=\"1042\" data-end=\"1146\"\u003eThe pulsed nature of DI can introduce pressure fluctuations that disrupt fuel flow to the PI injectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1147\" data-end=\"1261\"\u003e\n\u003cp data-start=\"1149\" data-end=\"1261\"\u003ePort injection requires boost-referenced fuel pressure to maintain consistent injector differential under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1262\" data-end=\"1360\"\u003e\n\u003cp data-start=\"1264\" data-end=\"1360\"\u003eAt higher boost and airflow, maintaining precise and repeatable fueling becomes more difficult\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1362\" data-end=\"1604\"\u003eBy separating the DI and PI supply, each system operates independently and exactly as intended. The result is \u003cstrong data-start=\"1472\" data-end=\"1563\"\u003esmoother fuel delivery, improved consistency, and greater confidence as power increases\u003c\/strong\u003e—especially on higher-boost Supra setups.\u003c\/p\u003e\n\u003ch3 data-start=\"1606\" data-end=\"1659\"\u003eDesigned to Install Cleanly on the Supra Platform\u003c\/h3\u003e\n\u003cp data-start=\"1661\" data-end=\"1773\"\u003eExtensive development went into making this system straightforward to install while retaining OEM functionality.\u003c\/p\u003e\n\u003cul data-start=\"1775\" data-end=\"2217\"\u003e\n\u003cli data-start=\"1775\" data-end=\"1992\"\u003e\n\u003cp data-start=\"1777\" data-end=\"1992\"\u003e\u003cstrong data-start=\"1777\" data-end=\"1926\"\u003eThe OEM fuel pump top hat is retained using additional precision-machined aluminum fuel fittings that integrate directly into the factory top hat\u003c\/strong\u003e, eliminating the need for repinning or modifying factory wiring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1993\" data-end=\"2076\"\u003e\n\u003cp data-start=\"1995\" data-end=\"2076\"\u003e\u003cstrong data-start=\"1995\" data-end=\"2048\"\u003eOptional billet top hats are available separately\u003c\/strong\u003e for those who prefer them\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2077\" data-end=\"2217\"\u003e\n\u003cp data-start=\"2079\" data-end=\"2217\"\u003e\u003cstrong data-start=\"2079\" data-end=\"2177\"\u003eA plug-and-play wiring harness is supplied for direct compatibility with the Reflex controller\u003c\/strong\u003e, simplifying installation and control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2219\" data-end=\"2298\"\u003eThe result is a clean, factory-like install that avoids unnecessary complexity.\u003c\/p\u003e\n\u003ch3 data-start=\"2300\" data-end=\"2337\"\u003eScalable Pump and Control Options\u003c\/h3\u003e\n\u003cp data-start=\"2339\" data-end=\"2392\"\u003eThe system is designed to grow with your Supra build:\u003c\/p\u003e\n\u003cul data-start=\"2394\" data-end=\"2626\"\u003e\n\u003cli data-start=\"2394\" data-end=\"2444\"\u003e\n\u003cp data-start=\"2396\" data-end=\"2444\"\u003e\u003cstrong data-start=\"2396\" data-end=\"2444\"\u003eDual Walbro 450 fuel pumps included standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2445\" data-end=\"2517\"\u003e\n\u003cp data-start=\"2447\" data-end=\"2517\"\u003e\u003cstrong data-start=\"2447\" data-end=\"2479\"\u003eOptional Walbro 525 upgrades\u003c\/strong\u003e available for higher horsepower goals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2518\" data-end=\"2626\"\u003e\n\u003cp data-start=\"2520\" data-end=\"2530\"\u003eChoice of:\u003c\/p\u003e\n\u003cul data-start=\"2533\" data-end=\"2626\"\u003e\n\u003cli data-start=\"2533\" data-end=\"2565\"\u003e\n\u003cp data-start=\"2535\" data-end=\"2565\"\u003eStandard relay configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2568\" data-end=\"2626\"\u003e\n\u003cp data-start=\"2570\" data-end=\"2626\"\u003e\u003cstrong data-start=\"2570\" data-end=\"2598\"\u003eSolid-state relay option\u003c\/strong\u003e for full PWM pump control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2628\" data-end=\"2746\"\u003eThis flexibility allows the fuel system to scale as power levels increase without requiring a complete redesign later.\u003c\/p\u003e\n\u003ch3 data-start=\"2748\" data-end=\"2778\"\u003eHigh-Quality Fuel Plumbing\u003c\/h3\u003e\n\u003cp data-start=\"2780\" data-end=\"2858\"\u003eAll fuel lines included in the kit feature \u003cstrong data-start=\"2823\" data-end=\"2857\"\u003etriple-layer PTFE construction\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"2860\" data-end=\"3066\"\u003e\n\u003cli data-start=\"2860\" data-end=\"2923\"\u003e\n\u003cp data-start=\"2862\" data-end=\"2923\"\u003eInner \u003cstrong data-start=\"2868\" data-end=\"2881\"\u003ePTFE core\u003c\/strong\u003e for full fuel and ethanol compatibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2924\" data-end=\"2990\"\u003e\n\u003cp data-start=\"2926\" data-end=\"2990\"\u003eMiddle \u003cstrong data-start=\"2933\" data-end=\"2966\"\u003estainless steel reinforcement\u003c\/strong\u003e for pressure strength\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2991\" data-end=\"3066\"\u003e\n\u003cp data-start=\"2993\" data-end=\"3066\"\u003eOuter \u003cstrong data-start=\"2999\" data-end=\"3025\"\u003enylon protective layer\u003c\/strong\u003e for abrasion resistance and durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3068\" data-end=\"3174\"\u003eDesigned to handle aggressive fuels, high pressure, and the heat typical of high-performance Supra builds.\u003c\/p\u003e\n\u003ch3 data-start=\"3176\" data-end=\"3227\"\u003eCompact, Purpose-Built Fuel Pressure Regulation\u003c\/h3\u003e\n\u003cp data-start=\"3229\" data-end=\"3379\"\u003eThe system includes Spool Performance’s \u003cstrong data-start=\"3269\" data-end=\"3322\"\u003ein-house designed compact fuel pressure regulator\u003c\/strong\u003e, developed specifically for auxiliary fuel applications:\u003c\/p\u003e\n\u003cul data-start=\"3381\" data-end=\"3580\"\u003e\n\u003cli data-start=\"3381\" data-end=\"3442\"\u003e\n\u003cp data-start=\"3383\" data-end=\"3442\"\u003eBoost-referenced for accurate pressure control under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3443\" data-end=\"3483\"\u003e\n\u003cp data-start=\"3445\" data-end=\"3483\"\u003eStable regulation at high flow rates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3484\" data-end=\"3533\"\u003e\n\u003cp data-start=\"3486\" data-end=\"3533\"\u003eCompact design for clean engine bay packaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3534\" data-end=\"3580\"\u003e\n\u003cp data-start=\"3536\" data-end=\"3580\"\u003eBuilt to withstand high heat and vibration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3582\" data-end=\"3619\"\u003eBuilt for High-Power Supra Builds\u003c\/h3\u003e\n\u003cp data-start=\"3621\" data-end=\"3848\"\u003eWhether you’re building a strong street-driven Supra or a higher-power setup, the Spool Performance A90 \/ A91 Toyota Supra Auxiliary Fuel System delivers the fueling control and capacity needed to push the platform confidently.\u003c\/p\u003e\n\u003cp data-start=\"3850\" data-end=\"4098\"\u003eWith properly separated DI and PI supply, OEM-friendly integration using precision aluminum fittings, Reflex compatibility, high-quality plumbing, and scalable pump options, this system is engineered to perform reliably as your Supra build evolves.\u003c\/p\u003e\n\u003cp data-start=\"4100\" data-end=\"4279\"\u003e\u003cstrong data-start=\"4100\" data-end=\"4279\"\u003eIf you’re ready to take your Supra’s fueling to the next level with a system that’s thoughtfully engineered and easy to live with, this is the solution built to get you there.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"4281\" data-end=\"4284\"\u003e\n\u003ch3 data-start=\"4286\" data-end=\"4301\"\u003e\u003cstrong data-start=\"4290\" data-end=\"4301\"\u003eFitment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"4303\" data-end=\"4452\"\u003e\n\u003cli data-start=\"4303\" data-end=\"4452\"\u003e\n\u003cp data-start=\"265\" data-end=\"308\"\u003e\u003cstrong data-start=\"265\" data-end=\"306\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eToyota GR Supra\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"311\" data-end=\"508\"\u003e\n\u003cli data-start=\"311\" data-end=\"408\"\u003e\n\u003cp data-start=\"313\" data-end=\"340\"\u003e\u003cstrong data-start=\"313\" data-end=\"326\"\u003eA90 Supra\u003c\/strong\u003e – 2020–2021\u003c\/p\u003e\n\u003cul data-start=\"345\" data-end=\"408\"\u003e\n\u003cli data-start=\"345\" data-end=\"381\"\u003e\n\u003cp data-start=\"347\" data-end=\"381\"\u003e3.0 \/ 3.0 Premium (B58 inline-6)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"386\" data-end=\"408\"\u003e\n\u003cp data-start=\"388\" data-end=\"408\"\u003e2.0 (B48 inline-4)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"411\" data-end=\"508\"\u003e\n\u003cp data-start=\"413\" data-end=\"440\"\u003e\u003cstrong data-start=\"413\" data-end=\"426\"\u003eA91 Supra\u003c\/strong\u003e – 2022–2023\u003c\/p\u003e\n\u003cul data-start=\"445\" data-end=\"508\"\u003e\n\u003cli data-start=\"445\" data-end=\"481\"\u003e\n\u003cp data-start=\"447\" data-end=\"481\"\u003e3.0 \/ 3.0 Premium (B58 inline-6)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"486\" data-end=\"508\"\u003e\n\u003cp data-start=\"488\" data-end=\"508\"\u003e2.0 (B48 inline-4)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spool Performance","offers":[{"title":"Walbro 450 with check valves","offer_id":51595301519655,"sku":"SP-A9XAUXF450","price":1299.0,"currency_code":"USD","in_stock":true},{"title":"Walbro 525 with check valves","offer_id":51595301552423,"sku":"SP-A9XAUXF525","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0959\/3146\/6023\/files\/1_b8beda19-21f9-450e-91ac-1c8acbb1aa85.png?v=1783387418","url":"https:\/\/primestore.us\/products\/a90-a91-toyota-supra-auxiliary-split-fuel-system","provider":"PrimeStore Premium Marketplace ","version":"1.0","type":"link"}