Spool IFX150 Upgraded DI Injectors [Gen 1 B58]
The Spool IFX direct injectors provide approximately 50% more flow than the factory injectors. They are intended for builds where the original injectors run out of capacity at high load and RPM while smooth idle and low-load behaviour remain important.
The extra fuel is delivered through the factory direct-injection system. Correct calibration changes are mandatory before running the engine with these injectors.
What the upgrade adds
- Approximately 50% more flow than the factory injectors
- Designed to retain smooth idle and low-load behaviour
- Suitable for gasoline and ethanol-based fuels
- Supplied as a flow-matched injector set
- Manufacturer-rated operation up to 290 bar
Injector size, high-pressure pump flow, in-tank pump capacity and calibration must be planned as one system so fuel delivery remains controlled across the full RPM range.






