Injector Dynamics ID1300-XDS Fuel Injectors | Single Injector | 48mm, 11mm Adapter Top, Subaru WRX Lower (1300.48.11.WRX)

Your tuner should be tuning the engine, not fighting the injectors.

Once boost and ethanol enter the picture, factory injectors become the first hard ceiling in the whole combination. The ID1300-XDS answers that with 1335cc/min of flow at 3.0 bar, compatibility with all known fuels, built for E85, delivered as a single injector in the 48mm body, 11mm adapter top, WRX-16B bottom adapter configuration. It is backed by full characterization data, so your ECU gets real numbers, not estimates. This is what consistent fueling actually looks like.

What You'll Feel

• Stock-like idle and clean cold starts, even at this injector size
• Crisp part-throttle response instead of the surge and stumble big injectors are known for
• Steady AFRs when boost climbs, no lean spikes at the top of the pull
• Cylinder-to-cylinder consistency you can see in your lambda and EGT logs
• Headroom to grow the build without touching the fuel system again

Features

• Nominal flow rate: 1335cc/min at 3.0 bar (43.5 psi), measured with iso-octane at 52 degrees C (125 degrees F)
• Maximum differential fuel pressure: 7.0 bar (101.5 psi)
• Compatible with all known fuels and designed specifically for alternative fuels like E85
• All stainless internals stand up to the corrosive nature of alcohol fuels
• USCAR electrical connector
• Configuration: 48mm body, 11mm adapter top, WRX-16B bottom adapter
• Sold individually, so you can replace one injector or build a set for an uncommon cylinder count

The Details

The ID1300-XDS was designed in partnership with Bosch Motorsport with alternative fuels in mind, and its stainless internals shrug off the corrosive side of alcohol better than anything else in this flow class. It was also built with the occasional switch back to gasoline in mind, with a minimum fuel mass low enough to idle and cruise cleanly on pump gas. Injector Dynamics publishes full characterization data, including slope, offset (dead time) versus voltage and pressure, and short pulse width behavior, so your tuner can load real numbers instead of chasing fuel trims across the map. Accurate dead times are what make large injectors behave at idle and cruise, and they are the reason these tune quickly and stay tuned. This configuration uses machined top adapters (already fitted) to suit the rail height listed above. The WRX-16B bottom adapter (already fitted) seats these in the 16mm Subaru manifold bore. If your harness does not have USCAR plugs, plug and play connector adapters are available separately, no cutting or soldering required.

Fitment Notes

• USCAR Connector, 48mm length, 11 mm (red) adapter top, WRX-16B bottom adapters.

Kit Includes

• 1 - ID1300-XDS Fuel Injector

Applications

• Universal: 48mm body, 11mm adapter top, WRX-16B bottom adapter, USCAR connector