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???on ported vs manifold vac-Lars?

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Old Sep 18, 2003 | 12:16 AM
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Default ???on ported vs manifold vac-Lars?

Ok, someone help me out here. Would your gas mileage be better with ported or manifold vac and same question for performance?? :confused:
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Old Sep 18, 2003 | 01:48 AM
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Default Re: ???on ported vs manifold vac-Lars? (LT1driver)

Do a search for his very recently published paper on the subject. You will feel like a genius talking to your friends after you read it. It does depend on each individual application, but the paper should answer your question for the most part.

-Chris
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Old Sep 18, 2003 | 07:30 AM
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Default Re: ???on ported vs manifold vac-Lars? (LT1driver)

At part throttle operation such as cruising on the highway, both types should provide the same amount of vacuum, giving you the same vacuum advance and the same economy. At WOT, neither will provide any vacuum advance, so performance will be the same as well.

Read the paper to get a better understanding of what vacuum advance does and in what situations.
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