What does this do?

[DMC VIN 6639]

Is this a thermal activated choke? The car came to me without it attached.

58020

[David T]

That is a damper that pulls in air from around the exhaust manifold when it is very cold to speed up the warm-up cycle. Unless you drive the car in cold weather you really don't need it.

[Jonathan]

http://support.delorean.com/kb/a43/air-filter-and-cold-air-intake.aspx