This mass airflow sensor housing is designed for use with our ongoing line of MAF sensor adapter plates. As a note, this IS A FUNCTIONAL PART, that can be printed for use or machined from your material of choice. 3d printing material recommendations: ABS (if under hood temps permit), PC, PCABS, or Nylon (HT/PA/Carbon Fiber HTN)Originally designed to fit a need for the Audi 2.7T engine market to provide a modestly larger sensor housing for further performance gains and tuning in racing environments, we decided to make this available for individuals to own this model for CAD Design or printing for individual use. Check out our MAF sensor adapter plates or design your own for use with this component.