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Old 11-10-2014, 07:38 AM   #3 (permalink)
Baltothewolf
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Winsight - '00 Honda Insight
90 day: 56.69 mpg (US)

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Quote:
Originally Posted by Old Mechanic View Post
Vacuum gauge. Load is measured by subtracting vacuum reading from ambient pressure.

IE ambient 30 inches
VAC reading 10 inches
LOAD 20/30 or 66.6%

regards
mech
Wow I legitimately didn't know that! Thanks! I think I'll pick up a cheap one the next time I get paid and install it. Now I just have to find out where is the best place to tap into the vacuum system.
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