BMW Gen 1 B58 Spool IFX150 Upgraded DI Injectors

The Spool IFX150 upgraded DI injectors for the BMW Gen 1 B58 add fueling headroom at high load while keeping idle and low-load behavior like stock.

Why you need it

The factory direct injectors limit how far a Gen 1 B58 can be pushed on boost and ethanol. The IFX150 is engineered to behave like the stock injector at idle and low load, then deliver much more flow at high load and high rpm. It runs at pressures up to 290 bar and was tested for months on multiple cars.

Fits

• BMW Gen 1 B58 engines

Features

• Increased flow at high load and high rpm
• Rated for pressures up to 290 bar
• Stock-like idle and low-load drivability
• Pairs with the Spool FX200 high pressure fuel pump

Good to know

A supporting tune is required to run these injectors. Spool provides calibration support across the major Gen 1 B58 tuning platforms. Professional installation is recommended.