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Posted: 08-01-2010 07:28 am |
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subwoofer
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EGT is an indication of the air to fuel ratio among other things. The vacuum is an indication of the amount of air going into the cylinder, you would have essentially the same vacuum even if the cylinder wasn't running at all (i.e. no fuel or spark). Valve overlap causes this to not be absolute, but for this purpose I think it should be close. Since there are two adjustments for each cylinder, we need to measure two things to know both are right. -- Joachim
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