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Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
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.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
| Manufacturer | Nostrum High Performance |
| Product Type | Fuel system bundle: Big Bore HPFP and direct injectors |
| SKU | H186-1532 |
| Vehicle Application | 2015-2023 Ford Mustang 2.3 EcoBoost |
| Pump flow increase | 63% over factory, 1.825 cc/rev |
| Injector flow increase | 22% over stock, 19.7 g/s at 100 bar |
| Injector count | Four direct injectors |
| Max operating pressure | 240 bar |
| Construction | Fully laser-welded stainless pump, custom high pressure line |
| Included items | Big Bore HPFP, four injectors, custom high pressure fuel line, hardware, install guide, data sheet |
| Warranty | Nostrum Limited Lifetime |
Stage 2 is the Big Bore answer for a 2015-2023 Ford Mustang 2.3 EcoBoost that has moved past bolt-ons. It pairs the Big Bore high pressure fuel pump, flowing 63% more than the factory pump at 1.825 cc/rev, with four high flow direct injectors rated 22% above stock at 19.7 g/s at 100 bar, and adds the custom high pressure fuel line, hardware, installation guide and data sheet. This is the combination for cars running a bigger turbo or a built engine, where mid-range fuel demand outruns a smaller pump and the injectors need to keep up at the top of the rev range as well. Everything still runs through the factory direct injection system and the ECU's own diagnostics, so there is no methanol tank and no secondary injection controller in the way.
A bigger injector is not automatically a better one. If the spray geometry is wrong for the chamber, you get poor idle quality, worse drivability, more knock, soot and a harder car to calibrate, and fuel can wash the bore and dilute the oil. Nostrum designs these injectors around this engine's air motion and chamber shape, and tests every one before batching the set, so the tuner is working with a predictable, matched group of four rather than chasing cylinder-to-cylinder differences.
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.
Usually not. A stock-turbo car is well covered by the Stage 1 Plus bundle, which uses the same injectors with the smaller Standard Bore Plus pump.
They are drop-in for this engine and run on the factory harness and rail, so the work is mechanical plus the calibration. No secondary controller or additional wiring loom is part of the job.
Ask them to calibrate for the new pump displacement and injector flow together, using Nostrum's tuning guide and the supplied injector data sheet as the starting point rather than generic tables.
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.
