Injector Dynamics ID1050-XDS Fuel Injectors | Set of 4 | Subaru EJ20 / EJ25 (1050.48.11.WRX.4)

An E85 build is only as good as the injectors feeding it.

Undersized injectors force high duty cycles, hot injector bodies, and fueling that gets less predictable exactly when you need it most. The ID1050-XDS (the current evolution of the ID1050x) answers that with 1065cc/min of flow at 3.0 bar, compatibility with all known fuels including E85, delivered as a matched set of 4 for your Subaru EJ20 / EJ25. Each set is flow matched using Dual Slope Matching and backed by full characterization data, so your ECU gets real numbers, not estimates. Sized right, characterized right, tuned right.

What You'll Feel

• Fuel trims that stay put season to season instead of drifting with the weather
• Steady AFRs when boost climbs, no lean spikes at the top of the pull
• Confidence to run ethanol daily without worrying what it is doing to your injectors
• Crisp part-throttle response instead of the surge and stumble big injectors are known for
• Stock-like idle and clean cold starts, even at this injector size

Features

• Nominal flow rate: 1065cc/min at 3.0 bar (43.5 psi), measured with gasoline at 52 degrees C
• Maximum differential fuel pressure: 10.0 bar (145.0 psi)
• Compatible with all known fuels, including gasoline, E85, and ethanol blends
• USCAR electrical connector
• Configuration: 48mm body, 11mm adapter top, WRX 16B bottom adapter (Subaru side feed conversion)
• Supplied as a flow-matched set with Dual Slope Matching for consistent delivery at low pulse widths
• Corrosion resistant internals for extended service life on ethanol and other corrosive fuels

The Details

The ID1050-XDS is the current evolution of the ID1050x, built to spec with Bosch Motorsport rather than modified from a production part. Dual Slope Matching matches flow in both the linear and nonlinear range, so cylinder-to-cylinder delivery stays consistent even at the short pulse widths where big injectors usually get ugly. Every set ships flow matched, and 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 adapters convert these top feed injectors to drop into the factory Subaru side feed location. If your harness does not have USCAR plugs, plug and play connector adapters are available separately, no cutting or soldering required.

Kit Includes

• 1 - Set of ID1050-XDS Injectors
• Necessary Hardware (if applicable)
• Instructions/Manuals (if applicable)
• Warranty Information

Applications

• 2002-2014 Subaru Impreza WRX
• 2007-2017 Subaru Impreza WRX STi
• 2007-2011 Subaru Legacy GT
• 2007-2011 Subaru Forester XT