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SU performance tuning... 1800

posted by  Phil S. on  Sun Mar 6 12:41 CST 2005
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

Okay, good. You can remember the vacuum thing like this: When the throttles are wide open, the manifold is open to the air and at nearly atmospheric pressure -- when the throttles are at idle and blocking the airflow, you've got a bunch of pistons and valves trying to pump air through anyway, so the manifold pressure is much less than ambient.

Less pressure is another way of saying more vacuum.






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