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Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
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| Manufacturer | Nostrum High Performance |
| Product Type | Fuel system package - HPFP plus DI injectors |
| SKU | H186-1282 |
| Engine Application | Subaru FA20DIT 2.0 turbo (direct injection) |
| Pump Flow Increase | 37% over stock |
| Injector Flow Increase | 10% over stock |
| Max Operating Pressure | 150 bar |
| Included Items | Fully assembled HPFP, four serialised injectors with tuning data, installation guide |
| Fuel Compatibility | E85 and ethanol compatible, E85 recommended |
| Tune Requirement | Yes - COBB recommended |
| Fuel System Capacity | 620 whp gasoline / 460 whp E85 with full supporting build |
| Warranty | Limited lifetime, original purchaser only |
Stage 1 is Nostrum's complete direct injection fuelling package for the FA20DIT: the upgraded high pressure fuel pump, flowing 37% more than the factory unit, plus a serialised set of four direct injectors flowing 10% more than stock, supplied with their tuning data. Buying them as one item is the point - the pump lifts the mid range where volume is the constraint, the injectors lift the top end where injection time is, and doing half the job usually just moves the limit. Everything stays under factory ECU control on COBB.
A direct injection fuel system fails you in two places. Around peak torque the cam-driven pump cannot supply enough volume, so rail pressure sags when boost comes in. Near peak power the crank angle per injection event gets short, and that is the injector's problem. Fit the pump alone and the car pulls harder early but still tails off; fit the injectors alone and the mid range stays soft. Stage 1 addresses both at once.
This package covers the high pressure side. The in-tank low pressure pump, fuel lines and calibration are separate, so factor those in - a car on E85 in particular will want the low pressure side checked. Nostrum quotes 620 whp on gasoline and 460 whp on E85 as the capacity of this fuel system on a build that already has the air handling, mechanical strength and tuning to use it.
The package covers the 2015-2021 Subaru WRX and the 2014-2018 Forester XT running the FA20DIT 2.0 turbo. A calibration is required and COBB is the recommended suite; arrange the tuning slot when you order so the car is not sitting on a trailer waiting. If you already have one half of the setup, the pump and the injector set are both available on their own.
| 2015-2021 | Subaru WRX |
| 2014-2018 | Subaru Forester XT |
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
No. You get the hardware and the injector tuning data for your tuner. The calibration is arranged separately, and COBB is the suite Nostrum recommends here.
The low pressure side is not part of this package. On a car moving to E85, check with your tuner whether the standard in-tank pump keeps up with your target.
You can buy them separately to stage the spend, but they solve different halves of the same limit. Fitting both at once also means one install and one tuning session.
Use the checked vehicle route, then confirm model year, engine, drivetrain, hardware and existing modifications on the product page or with our team before you commit.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
