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vacuum ?

1846 Views 1 Reply 2 Participants Last post by  not2XS
i have a booost guage and manual transmission.
if i shift early with same pressure on the pedaal like going up hill the vacuum will almost go to zero. does the vacuum pressure have anything to do with engine wear. is it beter to keep more negative vacuum pressure for engine life or milage.?

could someone explain what exactly goes on with engine vacuum and what does it really mean reference to the engine working. ?
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