{"product":{"id":11142678544726,"title":"Nostrum BMW B58 Gen 1 Stage 1 Gauntlet HPFP \u0026 Injector Bundle","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThis is the complete first fuelling step for a tuned BMW B58 Gen 1, sold as one matched package: Nostrum's cast stainless Gauntlet high pressure fuel pump kit flowing 68% more than stock, paired with the Stage 1 direct injector set flowing 35% more than stock. Buying the two together matters because a B58 fuel system is only as good as its weaker half. Fit bigger injectors alone and the factory pump struggles to keep the rail full; fit the pump alone and the injectors cap the volume. Sized to each other, the pair gives a 340i, 440i, M240i, 540i, 740i, X3 or X4 the headroom to run a serious petrol map or an E30 to E50 ethanol blend without the fuel side dictating the ceiling.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard-turbo B58 Gen 1 cars going all the way to a full ethanol-blend map in one go\u003c\/li\u003e\n\u003cli\u003eBuilds where a single fitting session is preferred over two workshop visits months apart\u003c\/li\u003e\n\u003cli\u003eOwners who want pump and injectors specified as a pair rather than guessed at separately\u003c\/li\u003e\n\u003cli\u003eCars where rail pressure and injector duty cycle have both become limits on the same map\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy The Pump And Injectors Are Bought Together\u003c\/h2\u003e\u003cp\u003eA direct injection engine has two fuel-side limits, and upgrading one hands the problem to the other. The Gauntlet pump keeps rail pressure up where the cam-driven standard pump gives way, and the Stage 1 injectors provide the volume that pressure lets you use. Buying them matched also means one calibration session covers the finished fuel system instead of a second map when the next part goes on.\u003c\/p\u003e\u003ch2\u003eWhat Arrives In The Bundle\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGauntlet high pressure fuel pump kit, cast stainless, 68% more flow than stock, 240 bar, 1.603 cc\/rev\u003c\/li\u003e\n\u003cli\u003eLow pressure inlet tube, stainless high pressure outlet tube, adaptation flange and alignment tool\u003c\/li\u003e\n\u003cli\u003eElectrical harness adapter, installation hardware, colour installation guide and pump flow test data sheet\u003c\/li\u003e\n\u003cli\u003eStage 1 high flow direct injector set, 1169 cc\/min at 100 bar, 35% more flow than stock, 240 bar rated, ethanol compatible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: matched high pressure fuel pump and DI injector bundle\u003c\/li\u003e\n\u003cli\u003eSKU: H186-2115\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW B58 Gen 1, 2015-2021 depending on model\u003c\/li\u003e\n\u003cli\u003ePump Flow: 68% over stock, 240 bar max operating pressure\u003c\/li\u003e\n\u003cli\u003eInjector Flow: 35% over stock, 1169 cc\/min at 100 bar\u003c\/li\u003e\n\u003cli\u003eExclusions: a calibration is not included and must be arranged separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eGen 1 B58 engines only, and not a Gen 1 carrying the Dorch camshaft pump lobe. Match your car against the table below, and load the tune before the engine is started. If you would rather build up in steps, the \u003ca href=\"\/products\/nostrum-bmw-b58-gen-1-gauntlet-hpfp-kit\"\u003eGauntlet HPFP kit\u003c\/a\u003e and \u003ca href=\"\/products\/nostrum-b58-gen-1-stage-1-injectors\"\u003eStage 1 injectors\u003c\/a\u003e are sold on their own.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eNostrum High Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFuel system bundle, HPFP kit and DI injectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eH186-2115\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW B58 Gen 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump flow increase over stock\u003c\/td\u003e\n\u003ctd\u003e68%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump displacement\u003c\/td\u003e\n\u003ctd\u003e1.603 cc\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump material\u003c\/td\u003e\n\u003ctd\u003eCast stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjector flow\u003c\/td\u003e\n\u003ctd\u003e1169 cc\/min at 100 bar, 35% over stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjector max operating pressure\u003c\/td\u003e\n\u003ctd\u003e240 bar \/ 24 MPa \/ 3500 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel compatibility\u003c\/td\u003e\n\u003ctd\u003eEthanol compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTune required\u003c\/td\u003e\n\u003ctd\u003eYes, before the vehicle is started\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBMW model\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMarket\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-Series 240i \/ 240xi\u003c\/td\u003e\n\u003ctd\u003e2015-2017\u003c\/td\u003e\n\u003ctd\u003eROW models - please call to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eM240i\u003c\/td\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-Series 340i \/ 340xi\u003c\/td\u003e\n\u003ctd\u003e2016-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-Series 440i \/ 440xi\u003c\/td\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5-Series 540i \/ 540xi\u003c\/td\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6-Series 640i\u003c\/td\u003e\n\u003ctd\u003e2018-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7-Series 740i\u003c\/td\u003e\n\u003ctd\u003e2016-2019\u003c\/td\u003e\n\u003ctd\u003eNorth America\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX3\u003c\/td\u003e\n\u003ctd\u003e2018-2019\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX4\u003c\/td\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs a tune included in the bundle?\u003c\/h3\u003e\u003cp\u003eNo. The bundle covers the pump kit and injectors; the calibration is arranged separately and has to be loaded before the car is started.\u003c\/p\u003e\u003ch3\u003eCan I fit the pump now and add the injectors later?\u003c\/h3\u003e\u003cp\u003eYou can, and both parts are sold individually. Doing it in one go means one fitting session and one calibration rather than repeating both later.\u003c\/p\u003e\u003ch3\u003eIs this enough for a full E85 map?\u003c\/h3\u003e\u003cp\u003eStage 1 is aimed at standard-turbo cars and blended ethanol. For a full E85 target or an upgraded turbo, the Stage 2 Gauntlet bundle uses the same pump with the larger Stage 2 injectors.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"Fuel Systems","created_at":"2026-07-24T13:04:12+01:00","handle":"nostrum-nostrum-b58-gen-1-stage-1-gauntlet-bundle-h186-2115","updated_at":"2026-09-08T16:28:40+01:00","published_at":"2026-07-24T17:58:28+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, BMW 2 Series, BMW 240i, BMW 3 Series, BMW 340i, BMW 4 Series, BMW 440i, BMW 5 Series, BMW 540i, BMW 6 Series, BMW 640i, BMW 7 Series, BMW 740i, BMW M240i, BMW X3, BMW X4, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, fits:bmw-2-series, fits:bmw-3-series, fits:bmw-4-series, fits:bmw-5-series, fits:bmw-6-series, fits:bmw-7-series, fits:bmw-x3, fits:bmw-x4, make:bmw, type:fuel-systems","variants":[{"id":54805996142934,"product_id":11142678544726,"title":"Default Title","price":"3088.39","sku":"H186-2115","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:04:12+01:00","updated_at":"2026-09-08T16:28:40+01:00","taxable":true,"barcode":null,"grams":0,"image_id":null,"weight":0.0,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14231280877910,"product_id":11142678544726,"name":"Title","position":1,"values":["Default Title"]}],"images":[],"image":null}}