High Flow Di Injector Upgrade

mountune's high flow Di injector upgrade has been proven in applications up to 400BHP. Engineered and developed for our motorsport programs, the mountune high flow Di injector upgrade uses the highest quality injectors and are direct replacements for the OE units.

One of the primary requirements for producing higher power figures is upgrading the fuel injectors with components that have increased flow capacity. mountune's high flow Di injector upgrade has been specified to meet this need.

The original fuel injectors found on the mk3 Focus ST engine begin to reach their maximum flow limit in the low 300BHP power range, depending on operating environment. mountune's high flow Di injector upgrade has been proven in road and race applications up to 400BHP.

Revised engine calibration will be required for use of this product. This product requires an advanced level of engine calibration knowledge for correct installation and is offered without instructions.


  • Matched set of four injectors
  • High quality, motorsport grade

Category: Engine

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