{"product":{"id":11142678708566,"title":"Nostrum BMW S55 3.0L Stage 2 Twin HPFP And Injector Bundle","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe S55 fuel system has two pumps and six injectors, and this bundle replaces all eight parts in one go. It pairs Nostrum's twin Standard Bore Plus high pressure fuel pump kit, worth 36% more flow than the factory pumps at up to 240 bar, with the Stage 2 direct injector set at 1410 cc\/min each, 55% up on the stock S55 injector and 12% up on the EU5 part. For an F80 M3, F82\/F83 M4 or F87 M2 Competition running an aggressive map or an ethanol blend, this is the package that clears the fuel side in a single install and a single calibration rather than dragging it out over two.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eS55 M cars on a Stage 2 map that are hitting fuel limits before they hit turbo limits.\u003c\/li\u003e\n\u003cli\u003eBuilds switching to E85 or high ethanol blends, where pumps and injectors are both stretched.\u003c\/li\u003e\n\u003cli\u003eCars going to upgraded turbos, where the fuel system needs to be ahead of the airflow.\u003c\/li\u003e\n\u003cli\u003eOwners who would rather do the manifold-off job once than twice.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBoth Halves Of The S55 Fuel System\u003c\/h2\u003e\u003cp\u003eThe pump kit alone is a substantial job on an S55, because the intake manifold has to come off for the spacer, gaskets and extended studs. Doing the injectors at the same time means that work happens once. The pump side brings two fully welded stainless pumps, vacuum-brazed hard lines, the low-pressure plumbing and a T-split with an integrated fuel pressure sensor; the injector side brings a tested, flow-matched set of six with OEM decoupling rings already installed. Both parts are also sold separately, starting with the \u003ca href=\"\/products\/nostrum-3-0l-bmw-s55-twin-standard-bore-plus-high-pressure-fuel-pump-kit\"\u003etwin Standard Bore Plus pump kit\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: matched twin pump and injector bundle\u003c\/li\u003e\n\u003cli\u003eSKU: H186-1281\u003c\/li\u003e\n\u003cli\u003eVehicle Application: BMW S55 3.0L twin-turbo\u003c\/li\u003e\n\u003cli\u003ePumps: two, 36% over stock flow, 240 bar max operating pressure\u003c\/li\u003e\n\u003cli\u003eInjectors: Stage 2 set of six, 1410 cc\/min at 100 bar, 55% over stock\u003c\/li\u003e\n\u003cli\u003eFuel: E85 capable\u003c\/li\u003e\n\u003cli\u003eExclusions: flex fuel sensor kit and calibration are separate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eConfirm your chassis code against the table below and remember this is an S55-only package, since the pump count alone rules out N55 cars. A calibration on EcuTek, Bootmod3 or MHD is required. Nostrum offers a flex fuel sensor kit as an optional addition, and on any car that will see varying ethanol content it is worth adding the F-Series flex fuel sensor kit so the tune can follow the blend.\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\u003eTwin pump and injector bundle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eH186-1281\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eBMW S55 3.0L twin-turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePumps supplied\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePump flow capacity\u003c\/td\u003e\n\u003ctd\u003e36% over stock\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\u003eInjector flow\u003c\/td\u003e\n\u003ctd\u003e1410 cc\/min at 100 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjector flow capacity\u003c\/td\u003e\n\u003ctd\u003e55% over stock S55, 12% over the EU5 M5 injector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjector set size\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning suites\u003c\/td\u003e\n\u003ctd\u003eEcuTek, Bootmod3, MHD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlex fuel sensor\u003c\/td\u003e\n\u003ctd\u003eOptional, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited lifetime\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\u003eChassis\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eF82\/F83\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eM2 Competition\/CS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow many pumps and injectors come in the bundle?\u003c\/h3\u003e\u003cp\u003eTwo high pressure fuel pumps, complete with their lines and manifold hardware, and six Stage 2 direct injectors.\u003c\/p\u003e\u003ch3\u003eIs the flex fuel sensor part of it?\u003c\/h3\u003e\u003cp\u003eNo. Nostrum lists it as an optional extra, so add it separately if the car will run varying ethanol content.\u003c\/p\u003e\u003ch3\u003eWhere does the Stage 3 bundle differ?\u003c\/h3\u003e\u003cp\u003eSame twin pumps, larger injectors. The \u003ca href=\"\/products\/nostrum-3-0l-bmw-s55-stage-3-bundle\"\u003eStage 3 bundle\u003c\/a\u003e uses the 1675 cc\/min set, which suits a bigger turbo and heavier ethanol use.\u003c\/p\u003e","vendor":"Nostrum High Performance","product_type":"Fuel Systems","created_at":"2026-07-24T13:04:17+01:00","handle":"nostrum-3-0l-bmw-s55-stage-2-bundle","updated_at":"2026-09-08T16:24:30+01:00","published_at":"2026-07-24T17:58:33+01:00","template_suffix":null,"published_scope":"global","tags":"BMW, BMW M2, BMW M3, BMW M4, brand:nostrum-high-performance, cat:fuel, dept:performance-parts, fits:bmw-m2, fits:bmw-m3, fits:bmw-m4, make:bmw, type:fuel-systems","variants":[{"id":54805996306774,"product_id":11142678708566,"title":"Default Title","price":"4972.25","sku":"H186-1281","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-24T13:04:17+01:00","updated_at":"2026-09-08T16:24:30+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":14231281041750,"product_id":11142678708566,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":83087876424022,"product_id":11142678708566,"position":1,"created_at":"2026-07-24T16:02:12+01:00","updated_at":"2026-07-24T16:02:14+01:00","alt":"Nostrum 3.0L BMW S55 Stage 2 Bundle","width":386,"height":386,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3.0L_BMW_S55_Twin_Standard_Bore_Stage_2_Bundle__96159.1695307307.386.513_9fb64ad2-0660-4536-82dd-28a0d2cf7d1a.jpg?v=1784905334","variant_ids":[]}],"image":{"id":83087876424022,"product_id":11142678708566,"position":1,"created_at":"2026-07-24T16:02:12+01:00","updated_at":"2026-07-24T16:02:14+01:00","alt":"Nostrum 3.0L BMW S55 Stage 2 Bundle","width":386,"height":386,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3.0L_BMW_S55_Twin_Standard_Bore_Stage_2_Bundle__96159.1695307307.386.513_9fb64ad2-0660-4536-82dd-28a0d2cf7d1a.jpg?v=1784905334","variant_ids":[]}}}