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Old 11-26-2012, 02:29 PM   #7
oot & aboot
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Joined: Jun 2003
Location: 8000ft.
Oddometer: 32,032
I use one of these:

Couldn't be easier... stick it in one.. stick it in the other.. make sure the reading is the same.
if it isn't adjust the screw (mentioned above) until they match.

You are basically measuring the actual air consumed.

Hope this helps
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