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Old 06-11-2021, 12:20 AM
X5chemist X5chemist is offline
Join Date: Jun 2021
Location: Austin, TX
Posts: 56
X5chemist is on a distinguished road
The air pump is an electric motor. If its housing can be taken apart, it may serviceable. If parts are available or fixable, it may worth taking it part. How difficult is it to take apart? I'll know when it fails because the "jet engine" noise will stop. Mine seems to have a new filter and hose. The pump looks original. It vibrates a lot during its start up run. A cold morning start is really loud.

The nitromethane is interesting. I'll have to ponder the chemical reactions.
'06 X5 3.0i - bought @143,123 miles (12/26/20)
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