BMW Gen 2 B46 & B48 Spool Stage 1 IFX350 Upgraded DI Injectors

Spool IFX350 Stage 1 upgraded DI injectors for Gen 2 BMW B46 and B48 engines flow 30% more than stock at high load while keeping stock-like idle and low load behavior.

Why you need it

As power goes up, the stock DI injectors run out of flow. The IFX350 is sized specifically for the Gen 2 B46/B48 to add flow where you need it at high load and rpm without hurting drivability, and it was tested for months on Spool's test cars before release.

Fits

• BMW Gen 2 B46
• BMW Gen 2 B48

Features

• 30% more flow than stock DI injectors
• Capable of flowing at up to 390 bar
• Stock-like idle and low load characteristics
• Pairs with the Spool FX350 high pressure fuel pump

Good to know

Tune changes are required to run these injectors, and Spool provides calibration support across existing Gen 2 B46/B48 tuning platforms. Professional installation is recommended.