Quote:
Originally Posted by Billfitz
The original pipe is wrapped with foam insulation. I don't know if it's supposed to keep the air in the pipe insulated from the heat of the engine compartment or the other way around, but I figured if BMW had a good reason to use it I would too.
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May I ask where you got it from? I just went to my local auto parts store for some other items and they didn’t have any.