Quote:
Originally Posted by Daox
http://autospeed.com/cms/A_109741/article.html
They describe a different method for measuring aero drag. Not bad, but I wonder how accurate it is. Its hard to say if a MAF sensor's voltage is directly proportional to engine load. For example, say you get 1 volt @ 60 mph and you are using 10 hp to maintain that speed. Does .5 volts mean you are now using 5 hp to maintain speed? I wouldn't be too sure. But, it is a way to measure improvements.
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For us - it would be better to consider a relative measurement (power is going to depend on a few other factors in addition to MAF readings and will vary from car to car). I think it would be pretty safe to say that given mostly consistent conditions - if ABA testing shows .5V - 1V - .5V... there's a benefit
