10-17-2011, 06:52 PM
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#17 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: Houston, TX
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Quote:
Originally Posted by SAM@GTM
FYI, the 370Z system has a very sophisticated logic which depends on the two MAF sensors as well as the two MAP sensors. So yes the 370Z does have two MAP sensors in addition to the two MAF sensors. One is used mainly for atmospheric pressure compensation and the other is used as a switch between VVEL engine rpm control and throttle body engine rpm control. In the event that the MAP sensor for the brake booster goes below a certain threshold, it will switch to the throttle body control to make sure that there is sufficient manifold vacuum so that the brake booster can do its job.
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Very interesting, especially how the throttle plates vs VVEL comes into play. I assume the MAP that watches brake-boost stuff is one the you see plugged into the top/rear area of the manifold itself. Where's the other one at?
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