{"title":"Subaru STI","description":"\u003cp\u003eBrowse parts listed for Subaru STI. Filter by version and year, then check the exact application on each product.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/collections\/all-products?vehicle_selection_id=sbv-model-v1-8d5813630fbc31e06426cad96204bacd\"\u003eView Subaru STI parts\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"mst-performance-cold-air-intake-system-subaru-sti-2-5l-2015-mst-sub-sti1501","title":"MST Performance Cold Air Intake System – Subaru STI 2.5l 2015+ | MST-SUB-STI1501","description":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe 2015-on WRX STI kept the legendary 2.5 turbo boxer, and it still deserves better breathing than the restrictive standard air box allows. This MST Performance cold air intake system swaps that box for precision-engineered aluminium pipework, designed to accelerate airflow to the turbo while minimising turbulence. On an engine as characterful as the EJ25, a freer intake sharpens the whole experience - induction noise included. Fits STI 2.5 models from 2015 on, supplied with all fittings for a direct OEM-replacement install.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVA-generation STI owners letting the 2.5 boxer breathe and be heard\u003c\/li\u003e\n\u003cli\u003eStaged STI builds starting the intake side properly\u003c\/li\u003e\n\u003cli\u003eReplacing factory intake plumbing ahead of tuning work\u003c\/li\u003e\n\u003cli\u003eDrivers pairing the boxer rumble with genuine induction noise\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFeeding The EJ25 Properly\u003c\/h2\u003e\u003cp\u003eSTI owners rarely leave things standard, and MST design for exactly that reality: their kits suit standard cars and already-tuned ones, built with top-quality components around faster, smoother airflow. Fitted to the 2.5 turbo it cleans up the route into the turbo and adds an intake voice that matches the car's character - useful on a standard car, near-essential on a build.\u003c\/p\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: MST Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: Cold air intake system\u003c\/li\u003e\n\u003cli\u003eSKU: MST-SUB-STI1501\u003c\/li\u003e\n\u003cli\u003eVehicle Application: Subaru STI 2.5, 2015 onwards\u003c\/li\u003e\n\u003cli\u003eMaterial: Aluminium intake pipework\u003c\/li\u003e\n\u003cli\u003eIncluded Items: All fittings for a direct OEM-replacement install\u003c\/li\u003e\n\u003cli\u003eFitment type: vehicle and engine specific\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eFor the 2.5-litre turbo WRX STI from 2015 on. The standard WRX of the same era runs the 2.0 FA20DIT and takes the \u003ca href=\"\/products\/mst-performance-cold-air-intake-system-subaru-wrx-2-0l-2015-mst-wrx-15012\"\u003eMST WRX 2.0 intake kit\u003c\/a\u003e - so confirm which engine you have and match the part number before ordering.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eMST Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCold air intake system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eMST-SUB-STI1501\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminium intake pipework\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eSubaru STI 2.5, 2015 onwards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eAll fittings for a direct OEM-replacement install\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs this for the WRX or the STI?\u003c\/h3\u003e\u003cp\u003eThe STI - the 2.5 turbo car from 2015 on. The 2.0 WRX uses a separate MST part, so check your engine before ordering.\u003c\/p\u003e\u003ch3\u003eCan I fit it to a modified STI?\u003c\/h3\u003e\u003cp\u003eYes. MST build their kits for standard and already-tuned vehicles, so it belongs in a staged build as much as on a standard car.\u003c\/p\u003e","brand":"MST Performance","offers":[{"title":"Default Title","offer_id":54418598461782,"sku":"MST-SUB-STI1501","price":398.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/0e830e7c-2f5e-4dd1-8e9b-f00701d72deb__41323.jpg?v=1784030997"},{"product_id":"nostrum-subaru-ej-1000cc-pfi-injectors","title":"Nostrum Subaru EJ 1000cc Twin Spray PFI Injectors","description":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eThe EJ is port injected, and on a turbocharged one the standard injector is the first thing to run dry once a VF turbo, a bigger downpipe and an appetite for E85 arrive. This Nostrum set flows 1000cc\/min - roughly 66% more than the stock WRX injector - using a twin spray, split gamma pattern with a bend angle developed for the EJ head and intake valves. They go in like a factory part: every seal is in the box and there are no adapters, rails or spacers to buy. The spray is side specific, so each injector is colour marked for its bank.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eA VF-series turbo WRX or STI at injector duty cycle that cannot safely take more boost or timing.\u003c\/li\u003e\n\u003cli\u003eSwitching to E85 or an ethanol blend, which needs a big step up in injector volume for the same air.\u003c\/li\u003e\n\u003cli\u003eSorting the fuel side without cutting an aftermarket rail and spacer kit into the intake manifold.\u003c\/li\u003e\n\u003cli\u003eForester XT, Legacy GT and Saab 9-2X Aero builds, where a well-aimed EJ-specific injector is otherwise hard to find.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGetting Past The Stock Injector On A Tuned EJ\u003c\/h2\u003e\u003cp\u003eNostrum quotes 1000cc\/min against the stock WRX injector, a 66% increase in flow capacity. On a modified EJ that is usually the difference between a tune the calibrator has to protect and one they can actually optimise, because there is finally injector left at the top of the rev range to run the fuel targets the boost demands. Against a generic large port injector the argument is aim rather than size: this one was designed for the EJ port, not adapted to it.\u003c\/p\u003e\u003ch2\u003eSide-Specific Spray And Why It Is Marked\u003c\/h2\u003e\u003cp\u003eMost aftermarket port injectors suit many engines, so the cone is a compromise nobody optimised for your head. Nostrum's twin arc pattern is aimed at the back of the EJ intake valves, and because the banks mirror each other the injectors are assigned to a side and colour marked. Fit them the wrong way round and you undo the reason for buying them.\u003c\/p\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Nostrum High Performance\u003c\/li\u003e\n\u003cli\u003eProduct type: port fuel injectors (PFI)\u003c\/li\u003e\n\u003cli\u003eSKU: L071-1272\u003c\/li\u003e\n\u003cli\u003eFlow rate: 1000cc\/min, 66% more than the stock WRX injector\u003c\/li\u003e\n\u003cli\u003eSpray: twin spray, split gamma, EJ-specific bend angle, side-specific cylinder assignment\u003c\/li\u003e\n\u003cli\u003eIncluded: all required seals, full-colour installation guide, tuning guide for your tuner\u003c\/li\u003e\n\u003cli\u003eNot required: adapters, aftermarket fuel rails or spacers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cp\u003eCheck your model and year below; several earlier cars need a top feed conversion first, which is a separate job. A calibration is needed: COBB tuning guides are available to your tuner, and Nostrum supports open source tuning case by case. Running an ethanol blend? An \u003ca href=\"\/products\/nostrum-essim-module-universal-kit\"\u003eethanol content sensing module\u003c\/a\u003e lets the tune adapt to what actually came out of the pump. Other options sit in the \u003ca href=\"\/collections\/port-fuel-injectors\"\u003eport fuel injector collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru Impreza WRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004 and 2005\u003c\/td\u003e\n\u003ctd\u003eSubaru STI (with top feed conversion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004 and 2005\u003c\/td\u003e\n\u003ctd\u003eSubaru Forester XT (with top feed conversion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006-2013\u003c\/td\u003e\n\u003ctd\u003eSubaru Forester XT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru Legacy GT \/ Outback XT (with top feed conversion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005 and 2006\u003c\/td\u003e\n\u003ctd\u003eSaab 9-2X Aero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003ePort fuel injectors (PFI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eL071-1272\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Application\u003c\/td\u003e\n\u003ctd\u003eSubaru EJ turbo family (port injection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlow Rate\u003c\/td\u003e\n\u003ctd\u003e1000cc\/min, 66% over the stock WRX injector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpray Pattern\u003c\/td\u003e\n\u003ctd\u003eTwin spray, split gamma, side specific\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\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003eAll required seals, installation guide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTune Requirement\u003c\/td\u003e\n\u003ctd\u003eYes; COBB guides available\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\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat does side-specific spray mean for the install?\u003c\/h3\u003e\u003cp\u003eEach injector is aimed for a particular bank and colour marked accordingly. Fit them to the wrong side and the spray no longer targets the back of the valve as intended.\u003c\/p\u003e\u003ch3\u003eMy car needs a top feed conversion - is that included?\u003c\/h3\u003e\u003cp\u003eNo. For 2004-2005 STI and Forester XT and 2005-2009 Legacy GT and Outback XT, the conversion is a prerequisite you arrange separately.\u003c\/p\u003e\u003ch3\u003eDo these fit the direct injected FA engines?\u003c\/h3\u003e\u003cp\u003eNo. These are port injectors for the EJ family. The FA20DIT and FA24 run direct injection and use a different injector that sits in the cylinder head.\u003c\/p\u003e","brand":"Nostrum High Performance","offers":[{"title":"Default Title","offer_id":54805987950934,"sku":"L071-1272","price":553.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/Subaru2__41079.1733332750_a09260ca-69af-4190-addd-e4b7bd7f7728.png?v=1784905317"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/collections\/hoonies-model-subaru-sti-20261010-511d0f3686d9.webp?v=1791643133","url":"https:\/\/hooniesadrenaline.co.uk\/collections\/subaru-sti.oembed","provider":"Hoonies Adrenaline","version":"1.0","type":"link"}