[ecomodded]

I am hoping with your back ground that you can shed some light on my musings on airflow and the vw tdi diesel.

I am thinking that a restriction in the intake airflow would cause the motor to use less gas. As the mass air-flow senor on the intake tube would be reading less airflow, and ask for the appropriate amount of fuel to mix with the restricted airflow, Causing less fuel to be burned when demanded by the throttle. a hp restrictor of sorts.
What are your thoughts on this actually increasing or decreasing fuel economy ?