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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 bundle, Race injectors and pump |
| SKU | H186-2095 |
| Injector volume flow | 1950 cc/min |
| Injector flow increase over stock | 45 percent over the standard 2.3 EcoBoost injector |
| Injector maximum pressure | 200 bar / 20 MPa / 2900 psi |
| Pump class | Big Bore 1150-250 |
| Pump flow increase over stock | 63 percent |
| Sealing | Double Teflon combustion seals |
| Fuel | 93 octane petrol, E60 and E85 |
| Tune required | Yes |
| Warranty | Nostrum limited lifetime |
Stage 3 is the top of Nostrum's Focus RS fuel ladder and it is unapologetically for built cars. It pairs the Race direct injectors, 1950 cc/min and 45 percent more than the standard 2.3 EcoBoost injector, with the Big Bore 1150-250 pump supplying 63 percent more than the factory unit. The reason to come here rather than Stage 2 is simple: on a built engine with a large turbo the injector runs out of time at high rpm, and the Race set is the only one in the range with enough flow to stay ahead of it. It all still runs through the factory direct injection system under the standard ECU.
The honest answer is that most road RS builds want Stage 2. Its injectors are smaller but carry a 240 bar working pressure, which keeps drivability easy and gives the tuner more pressure to play with. Stage 3 goes the other way: far more flow, but the Race injector's pressure ceiling is 200 bar, so the extra fuel comes from nozzle size rather than pressure. On a standard-turbo car that trade makes no sense. On a built engine that has already outgrown Stage 2, it is the only sensible move.
A bigger nozzle with a lower pressure ceiling is a deliberate choice, not a shortcut. Nostrum develops the Race injector's plume for atomisation quality at that flow, because a large injector spraying badly brings soot, knock, bore wash and oil dilution with it. Pairing it with the Big Bore pump matters for the same reason: the rail has to stay fed at the volume these injectors pull.
Nostrum covers the 2016 onwards Ford Focus RS 2.3 EcoBoost here, naming Tunewerks, JEM Sport and PD Tuning as tuners. A tune is required and matters more here than lower down the range, because an injector this large needs the calibration built around it to idle and drive properly. Big Bore kits are made to order, so talk to us before booking the car in. If you are unsure, use a professional fitter.
| Years | Model | Engine |
| 2016+ | Ford Focus RS | 2.3L EcoBoost |
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.
It can be. The Race injector is sized for built engines and big turbos, and on a standard-turbo car you would be giving up pressure headroom for flow you cannot use. Stage 2 is the better road setup.
Yes, the Race direct injectors are sold separately if your RS already runs a Big Bore pump.
The package covers the direct injection side. Low pressure supply, in-tank hardware and the calibration are separate, so plan those with your tuner before the car goes on the ramp.
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.
