{"product_id":"precision-raceworks-m2-m240i-g87-g42-stand-alone-afs™-bmw-b58-s58","title":"Precision Raceworks M2\/M240i (G87\/G42) Stand Alone AFS™ – BMW B58\/S58","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eOnce you add port injection to a direct-injected M240i (B58) or M2 (S58), the factory low-pressure fuel system becomes the weak link. The factory pump is PWM-controlled to reduce output once target fuel pressure is reached, putting it in constant conflict with any pump trying to feed port injection, and the HPFP's control system dumps fuel back at high pressure\/low volume, causing pressure oscillations. The Precision Raceworks Stand Alone AFS™ solves this by adding a completely dedicated, independent fuel system just for port injection — now with plug-and-play connectors and AN8 adapters, so the factory harness no longer needs to be cut.\u003c\/p\u003e\n\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePart Numbers: 601-0342 (AFS.460) \/ 601-0350 (AFS.640) \/ 601-0341 (AFS.800)\u003c\/li\u003e\n\u003cli\u003eFully separate low-pressure fuel system for port injection, independent of the factory pump and PWM control\u003c\/li\u003e\n\u003cli\u003eBillet aluminum top hat with 3 high-flow fuel ports\u003c\/li\u003e\n\u003cli\u003eFully adjustable, 1:1 boost-scalable billet fuel pressure regulator\u003c\/li\u003e\n\u003cli\u003e10-micron USA-made Microglass fuel filter, ideal for E85\u003c\/li\u003e\n\u003cli\u003eSmooth-bore, high-flow PTFE feed and return lines (AN6)\u003c\/li\u003e\n\u003cli\u003ePump options: AFS.460 (single Walbro 535, 460 LPH @ 3 bar), AFS.640 (dual Walbro 450s, 640 LPH combined @ 3 bar), AFS.800 (dual Walbro 535s, 800 LPH combined @ 3 bar)\u003c\/li\u003e\n\u003cli\u003e100% E85 compatible across all components\u003c\/li\u003e\n\u003cli\u003eIncludes: Walbro fuel pump(s) per configuration, billet top hat and fuel pressure regulator, 10-micron Microglass fuel filter, PTFE feed\/return lines and fittings, and a configurable pump activation harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eDesigned for port injection kits where the fuel rail mounts above the manifold — if running a plate-style spacer PI setup, contact Precision Raceworks before ordering to confirm compatibility. Some fuel rails may require a Male AN8-ORB to Female AN6-ORB adapter (not included). If your tuner wants Solid State Relays, one is needed per pump — see the \u003ca href=\"https:\/\/x58cartel.com\/products\/precision-raceworks-solid-state-relay-upgrade-kit\"\u003eSolid State Relay Upgrade Kit\u003c\/a\u003e. For the M2 (G87, S58), this AFS feeds the port injection setup from the \u003ca href=\"https:\/\/x58cartel.com\/products\/precision-raceworks-s58-port-injection-kit-bmw-g8x-m2-m3-m4\"\u003ePrecision Raceworks S58 Port Injection Kit\u003c\/a\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/AFS_Install_Guide_Rev_02.pdf?v=1785356507\"\u003ePDF install instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/youtu.be\/HpgfUxx2-Ck\"\u003eVideo installation instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/201-0049_Boost_Reference_Install_Instructions.pdf?v=1785356507\"\u003ePump activation harness instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/settingfuelpressure.pdf?v=1785356507\"\u003eSetting fuel pressure — adjustable regulator (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eVehicle Application\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM240i \/ M240i xDrive\u003c\/td\u003e\n\u003ctd\u003eG42\u003c\/td\u003e\n\u003ctd\u003eB58 3.0L\u003c\/td\u003e\n\u003ctd\u003e2022+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003eG87\u003c\/td\u003e\n\u003ctd\u003eS58 3.0L\u003c\/td\u003e\n\u003ctd\u003e2023+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Precision Raceworks","offers":[{"title":"AFS.460","offer_id":53710919696691,"sku":"601-0342","price":1574.99,"currency_code":"USD","in_stock":true},{"title":"AFS.800","offer_id":53710919794995,"sku":"601-0341","price":1949.99,"currency_code":"USD","in_stock":true},{"title":"AFS.640","offer_id":53710919729459,"sku":"601-0350","price":1799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/4226\/2579\/files\/Top_Hat_Single_Pump.webp?v=1784931304","url":"https:\/\/x58cartel.com\/products\/precision-raceworks-m2-m240i-g87-g42-stand-alone-afs%e2%84%a2-bmw-b58-s58","provider":"x58cartel","version":"1.0","type":"link"}