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Old 11-20-2012, 01:35 AM
Zerocyde Zerocyde is offline
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Power valves. Some say half your manifold vacuum, some say 2 hg below. Who is right?

Half the people I talk too say you cut your idle manifold vacuum in half, and round down to the nearest .5, so with 10hg you want a 4.5pv, etc. The other half of the people I talk to say you want 2 hg below your idle manifold vacuum, so with 10hg you would want a 7.5pv.

Who is correct, and why?
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