{"product":{"id":11142673203542,"title":"Nostrum BMW B48\/B46 Gen 1 2.0 High Flow DI Injector Set","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe Nostrum BMW B48\/B46 Gen 1 2.0 High Flow DI Injector Set gives BMW's four-cylinder turbo the same kind of fuelling headroom the six-cylinder cars have had for years. Sold as a matched set of four, these injectors flow 35% more than the factory unit and use an 8-hole spray pattern to keep fuel distribution even in the chamber. On a mapped B48 or B46, the standard injector is a real ceiling once boost rises or an ethanol blend goes in the tank, and a maxed injector means the calibration has to give ground instead of using the hardware you have already paid to fit. This set removes that limit on the injector side and gives a tuner room to work with.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMapped B48 or B46 Gen 1 cars where injector duty cycle has become the limit\u003c\/li\u003e\n\u003cli\u003eFour-cylinder builds moving onto an ethanol blend that needs more volume than petrol\u003c\/li\u003e\n\u003cli\u003eKeeping all four cylinders on matched injectors rather than mixing old and new parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere The Standard B48 Injector Runs Out\u003c\/h2\u003e\u003cp\u003eFactory injectors are sized for factory outputs. Once a 2.0 turbo four is running a real map, the injector spends longer open on every cycle until there is no time left to add fuel, and the tune has to work around it. Thirty-five percent more flow, spread through an 8-hole pattern, moves that limit far enough back that airflow and calibration decide the outcome instead of the fuel side.\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: H720-1974\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW B48 Gen 1 and B46 Gen 1 2.0 four-cylinder engines\u003c\/li\u003e\n\u003cli\u003eFlow: 35% over stock\u003c\/li\u003e\n\u003cli\u003eSpray Pattern: 8-hole\u003c\/li\u003e\n\u003cli\u003eIncluded Items: set of four injectors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eThese are for Gen 1 B48 and B46 engines, the 2.0 turbo four used across BMW's 20i to 30i models and the Mini JCW range. Later Gen 2 engines take a different injector, so confirm the engine code and build date on your car before ordering. A supporting calibration is needed to use the extra flow. If the car is an import or already carries turbo, fuel or ECU changes, send Hoonies the details and we will confirm the right set with you.\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\u003eH720-1974\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW B48 Gen 1 and B46 Gen 1\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\u003eSpray pattern\u003c\/td\u003e\n\u003ctd\u003e8 hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet size\u003c\/td\u003e\n\u003ctd\u003e4 injectors\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\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow do I know my B48 or B46 is Gen 1?\u003c\/h3\u003e\u003cp\u003eCheck the engine code and build date on the car rather than the model badge, because BMW ran Gen 1 and Gen 2 versions of the same 2.0 turbo four. Send Hoonies the VIN if you want it confirmed.\u003c\/p\u003e\u003ch3\u003eDo the injectors need a tune?\u003c\/h3\u003e\u003cp\u003eYes. A larger injector changes what the ECU has to command for a given fuel mass, so a calibration written around the set is what turns the extra flow into usable headroom. Browse the rest of the \u003ca href=\"\/collections\/nostrum-high-performance\"\u003eNostrum fuel system range\u003c\/a\u003e if the pump side needs attention too.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"High Flow Direct Injectors","created_at":"2026-07-24T13:02:32+01:00","handle":"nostrum-b48-b46-high-flow-injector-set","updated_at":"2026-09-08T18:05:33+01:00","published_at":"2026-07-24T17:57:35+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":54805979169110,"product_id":11142673203542,"title":"Default Title","price":"1277.68","sku":"H720-1974","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:02:32+01:00","updated_at":"2026-09-08T18:05:33+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":14231272489302,"product_id":11142673203542,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":83087868854614,"product_id":11142673203542,"position":1,"created_at":"2026-07-24T16:01:39+01:00","updated_at":"2026-07-24T16:01:41+01:00","alt":"Nostrum B48\/B46 High Flow Injector Set","width":386,"height":386,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/B48__94820.1754075429.386.513_26101f04-8de9-4593-a919-068f90d83c1e.png?v=1784905301","variant_ids":[]}],"image":{"id":83087868854614,"product_id":11142673203542,"position":1,"created_at":"2026-07-24T16:01:39+01:00","updated_at":"2026-07-24T16:01:41+01:00","alt":"Nostrum B48\/B46 High Flow Injector Set","width":386,"height":386,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/B48__94820.1754075429.386.513_26101f04-8de9-4593-a919-068f90d83c1e.png?v=1784905301","variant_ids":[]}}}