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Old 01-02-2009, 12:58 PM   #6 (permalink)
93 Metro Streamliner
Join Date: Oct 2008
Location: Oregon
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AeroMetro - '93 Geo Metro
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Originally Posted by Christ View Post
but just using it without modification will definitely yield an incorrect reading.
Yes, which is why I asked if it could be adapted (to give a correct reading).

And the difference is linear. display=actual * 3/4

Apparently 3 cylinder oem tachs were rare, but not nonexistent.
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