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      02-07-2013, 11:35 AM   #5

Drives: 335i
Join Date: Jul 2010
Location: NoVA

Posts: 64
iTrader: (0)

My car has about 50K on it. It's had the head replaced a few times and the EGR was done awhile back.

Now if I understand correctly diesel engines do not have a throttle body. My guess: This is a unit to stop a runaway engine.

Never heard of a runaway engine? Check this out.

I'm sure there's lots of oil in the intercooler.