{"product":{"id":11142673006934,"title":"Nostrum BMW B58 Gen 1 Stage 1 High Flow DI Injectors","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe Nostrum BMW B58 Gen 1 Stage 1 High Flow DI Injectors are the first real fuelling step for a tuned B58 that has outgrown its factory direct injectors. On a 340i, 440i, M240i or X3 on an aggressive map, the standard injector usually hits its limit first, and once duty cycle is pegged the calibration has to be pulled back. This set flows 35% more than the stock B58 Gen 1 injector, measured at 1169 cc\/min at 100 bar, and carries a 240 bar maximum operating pressure. The injectors keep an OEM equivalent spray pattern, are ethanol compatible and go in without harness adapters or spacers, which makes them the sensible partner for an E30 or E50 blend on a standard turbo.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStock-turbo B58 Gen 1 cars where injector duty cycle, not airflow, is the ceiling\u003c\/li\u003e\n\u003cli\u003eMoving onto an E30 or E50 ethanol blend and needing the extra volume ethanol demands\u003c\/li\u003e\n\u003cli\u003eA staged build that wants the injectors sorted before touching the high pressure pump\u003c\/li\u003e\n\u003cli\u003eEcuTek, MHD and bootmod3 calibration work that benefits from a familiar spray pattern\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere The Stock B58 Injector Runs Out\u003c\/h2\u003e\u003cp\u003eA standard injector is sized for a standard engine. Add boost, add ethanol, or add both, and it stays open for more of every cycle until there is no time left to put fuel in. Leaving the factory parts in means asking the map to work around that ceiling; a 35% larger injector gives the calibration somewhere to go at the top of the rev range.\u003c\/p\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: high flow direct injection (DI) injector set\u003c\/li\u003e\n\u003cli\u003eSKU: H720-1719\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW B58 Gen 1 engines\u003c\/li\u003e\n\u003cli\u003eFlow: 1169 cc\/min at 100 bar, 35% over stock\u003c\/li\u003e\n\u003cli\u003eMax Operating Pressure: 240 bar \/ 24 MPa \/ 3500 psi\u003c\/li\u003e\n\u003cli\u003eFuel Compatibility: ethanol compatible\u003c\/li\u003e\n\u003cli\u003eIncluded Items: injector set with detailed installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eStage 1 Or Stage 2 For Your B58\u003c\/h2\u003e\u003cp\u003eStage 1 is the right call for standard-turbo cars and moderate ethanol blends, and it holds the higher 240 bar rating of the two Nostrum B58 Gen 1 sets. For an upgraded turbo or a full E85 target, step up to the \u003ca href=\"\/products\/nostrum-b58-gen-1-stage-2-injectors\"\u003eStage 2 injectors\u003c\/a\u003e. Either way the factory high pressure pump becomes the next restriction, which is why the matched \u003ca href=\"\/products\/nostrum-nostrum-b58-gen-1-stage-1-gauntlet-bundle-h186-2115\"\u003eStage 1 Gauntlet bundle\u003c\/a\u003e pairs this set with the pump kit.\u003c\/p\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eThese suit the Gen 1 B58 only; the Gen 2 engine runs a 350 bar fuel system and takes its own set. A supporting calibration is required, with Nostrum data for EcuTek, MHD and bootmod3. Confirm the engine generation against the table below, and send Hoonies the details on imported or already-modified cars first.\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\u003eHigh flow DI injector set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eH720-1719\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\u003eVolume flow rate (nHeptane)\u003c\/td\u003e\n\u003ctd\u003e1169 cc\/min at 100 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMass flow rate (Viscor 16A)\u003c\/td\u003e\n\u003ctd\u003e14.1 g\/s at 100 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow increase over stock\u003c\/td\u003e\n\u003ctd\u003e35%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax 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\u003eSpray pattern\u003c\/td\u003e\n\u003ctd\u003eOEM equivalent\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eNostrum limited lifetime, manufacturing defects\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\u003eDo I need a tune with these injectors?\u003c\/h3\u003e\u003cp\u003eYes. Larger injectors change the fuelling the ECU commands, so the car needs a calibration written around them. Nostrum supplies data for EcuTek, MHD and bootmod3.\u003c\/p\u003e\u003ch3\u003eAre these enough for an ethanol blend?\u003c\/h3\u003e\u003cp\u003eThey are ethanol compatible, and the 35% extra volume is what makes an E30 or E50 blend workable on a standard turbo. For full E85, look at Stage 2 and the Gauntlet pump.\u003c\/p\u003e\u003ch3\u003eDo I need the Gauntlet pump at the same time?\u003c\/h3\u003e\u003cp\u003eNot always. On a standard-turbo car the injectors usually run out first, so many builds start here. Once rail pressure falls under load, the pump is the next part to address.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"High Flow Direct Injectors","created_at":"2026-07-24T13:02:28+01:00","handle":"nostrum-b58-gen-1-stage-1-injectors","updated_at":"2026-09-08T16:24:35+01:00","published_at":"2026-07-24T17:57:33+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, make:bmw, type:high-flow-direct-injectors","variants":[{"id":54805978972502,"product_id":11142673006934,"title":"Default Title","price":"1426.29","sku":"H720-1719","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:02:28+01:00","updated_at":"2026-09-08T16:24:35+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":14231272227158,"product_id":11142673006934,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":83087868625238,"product_id":11142673006934,"position":1,"created_at":"2026-07-24T16:01:37+01:00","updated_at":"2026-07-24T16:01:39+01:00","alt":"Nostrum B58 Gen 1 Stage 1 Injectors","width":500,"height":332,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/B58_Gen_1_Stage_1_-_H620-1718-A_3_1__67455.1698684302_0b370f73-ab3f-4705-9267-d8c0d23d3771.jpg?v=1784905299","variant_ids":[]}],"image":{"id":83087868625238,"product_id":11142673006934,"position":1,"created_at":"2026-07-24T16:01:37+01:00","updated_at":"2026-07-24T16:01:39+01:00","alt":"Nostrum B58 Gen 1 Stage 1 Injectors","width":500,"height":332,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/B58_Gen_1_Stage_1_-_H620-1718-A_3_1__67455.1698684302_0b370f73-ab3f-4705-9267-d8c0d23d3771.jpg?v=1784905299","variant_ids":[]}}}