{"product_id":"precision-raceworks-bmw-g8x-s58-g2x-b58-stand-alone-auxiliary-fuel-system","title":"PRECISION RACEWORKS BMW G8X S58 \u0026 G2X F97\/F98 B58 STAND ALONE AUXILIARY FUEL SYSTEM","description":"\u003cp\u003eThe Precision Raceworks BMW G8X S58 \u0026amp; G2X B58 Stand Alone Auxiliary Fuel System is the ultimate solution for enthusiasts and tuners seeking the most stable, high-performance low-pressure fueling setup available for modern BMW engines. Designed specifically for the BMW G8X M3\/M4 and G2X M240i\/M340i\/M440i platforms, this advanced auxiliary system delivers rock-solid fuel pressure, seamless integration, and unparalleled reliability—making it the most complete and technically refined port injection fueling solution on the market.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eNow featuring plug-and-play connectors and AN8 adapters for your fuel rail, installation is easier and cleaner than ever—no cutting or modification to your factory harness is required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eREVOLUTIONARY STAND-ALONE FUELING TECHNOLOGY\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTraditional low-pressure fuel upgrades increase the output of the factory pump, but this method introduces limitations due to BMW’s OEM PWM-controlled fuel pressure system. These systems reduce output when target fuel pressure is exceeded, causing instability and oscillations that can compromise fueling accuracy, especially under load or boost.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePrecision Raceworks eliminates these issues by providing a fully independent, stand-alone low-pressure system dedicated to your port injection. This ensures consistent, scalable fuel pressure that directly tracks boost levels, removing fluctuations and fuel starvation common with modified setups.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe result? Unmatched stability, cleaner fuel delivery, easier tuning, and more power potential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eKEY FEATURES \u0026amp; BENEFITS\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBillet Aluminium Top Hat:\u003c\/p\u003e\n\u003cp\u003eCNC machined from high-grade aluminium with three high-flow fuel ports for optimal configuration flexibility.\u003c\/p\u003e\n\u003cp\u003eDedicated Fuel Pumps for Port Injection:\u003c\/p\u003e\n\u003cp\u003eIsolated fueling system designed to support port injection without interference from factory fuel pressure regulators.\u003c\/p\u003e\n\u003cp\u003eFully Adjustable Billet Fuel Pressure Regulator:\u003c\/p\u003e\n\u003cp\u003eAllows 1:1 boost reference scaling, ensuring consistent fuel pressure relative to manifold boost for precision tuning.\u003c\/p\u003e\n\u003cp\u003eUSA-Made 10-Micron Microglass Fuel Filter:\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for E85 and ethanol-based fuels, providing clean, consistent flow.\u003c\/p\u003e\n\u003cp\u003eSmooth Bore PTFE Fuel Lines (AN6):\u003c\/p\u003e\n\u003cp\u003eHigh-flow, ethanol-compatible lines ensure maximum durability and minimal flow restriction.\u003c\/p\u003e\n\u003cp\u003ePlug-and-Play Installation:\u003c\/p\u003e\n\u003cp\u003eNow includes factory-style connectors both inside and outside the top hat—no cutting or splicing required.\u003c\/p\u003e\n\u003cp\u003eOptimal Pump Location:\u003c\/p\u003e\n\u003cp\u003eStrategically positioned to prevent fuel starvation under hard acceleration or cornering.\u003c\/p\u003e\n\u003cp\u003eConfigurable Pump Activation Harness:\u003c\/p\u003e\n\u003cp\u003eCustomisable control over auxiliary pump activation for flexible tuning and setup.\u003c\/p\u003e\n\u003cp\u003eEthanol Compatible Components:\u003c\/p\u003e\n\u003cp\u003eEvery part of the system, from seals to fittings, is 100% ethanol-safe.\u003c\/p\u003e\n\u003cp\u003eEasily Expandable \u0026amp; Upgradeable:\u003c\/p\u003e\n\u003cp\u003eSupports future performance increases with multi-pump configurations and scalable hardware.\u003c\/p\u003e\n\u003cp\u003eAVAILABLE CONFIGURATIONS\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAFS.425: Single Walbro 450 (F9000274) fuel pump – flows 425 LPH @ 3 bar\u003c\/p\u003e\n\u003cp\u003eAFS.460: Single Walbro 535 (F9000295) fuel pump – flows 460 LPH @ 3 bar\u003c\/p\u003e\n\u003cp\u003eAFS.640: Dual Walbro 450s (F9000274) – combined 640 LPH @ 3 bar\u003c\/p\u003e\n\u003cp\u003eAFS.745: One Walbro 450 (F9000274) + one Walbro 535 (F9000295) – combined 745 LPH @ 3 bar\u003c\/p\u003e\n\u003cp\u003eAFS.800: Dual Walbro 535s (F9000295) – combined 800 LPH @ 3 bar\u003c\/p\u003e\n\u003cp\u003e(Note: Male AN8-ORB to Female AN6-ORB adapter may be required for compatibility with some aftermarket fuel rails – not included.)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCOMPATIBILITY\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBMW G80 \/ G81 M3 (2021 - 2023)\u003c\/p\u003e\n\u003cp\u003eBMW G82 \/ G83 M4 (2021 - 2023)\u003c\/p\u003e\n\u003cp\u003eBMW G20 \/ G21 M340i (2019 - 2023)\u003c\/p\u003e\n\u003cp\u003eBMW G22 \/ G23 \/ G26 M440i (2020 - 2023)\u003c\/p\u003e\n\u003cp\u003eCompatible with both S58 and B58 engines.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWHY CHOOSE PRECISION RACEWORKS?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePrecision Raceworks is renowned for its innovative approach to fueling solutions, and this system represents the pinnacle of plug-and-play engineering for modern BMW performance. By isolating port injection from factory controls, this auxiliary fuel system ensures consistent AFRs, stable fuel pressure, improved injector resolution, and easier calibration for tuners. It’s the perfect foundation for any high-power, ethanol-fueled, or hybrid port\/direct injection build.\u003c\/p\u003e","brand":"DGE PERFORMACE","offers":[{"title":"AFS.425","offer_id":50305064272229,"sku":null,"price":43000.0,"currency_code":"ZAR","in_stock":true},{"title":"AFS.460","offer_id":50305064304997,"sku":null,"price":48000.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/5167\/9589\/files\/rn-image_picker_lib_temp_493944a3-cb4f-4982-a711-2b792794fd58.jpg?v=1786221531","url":"https:\/\/dgeperformace.com\/products\/precision-raceworks-bmw-g8x-s58-g2x-b58-stand-alone-auxiliary-fuel-system","provider":"DGE PERFORMACE","version":"1.0","type":"link"}