Quote:
Originally Posted by ST2008
OK, but why some state that we should keep vacuum as higher as much possible in order to have higher mpg.
For myself, the vacuum shows in Torque pro are 21psi for idling and 8 to 12psi for driving in a freeway (60mph). And I have no clue how to control the vacuum.
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I also use torque pro. It seems to incorrectly use psi instead of inches of mercury when displayi g vacuum. The 21 psi you see is actually 21 inches of vacuum.