Quote:
Originally Posted by johnpr
interesting, i know that in the performance world ram air really doesnt make much of a difference, in fact a trans am ws6 (only real performance difference being ram air) is equal to a regular trans am on the drag strip.
but for fuel economy im sure minimizing the pumping losses must help but whether or not it is measurable is going to be another story.
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WS6 TAs made 15 more HP and 25 more lb/ft of torque than a regular TA. In stock form they were 1-2 tenths quicker in the 1/4 mile.
Any time you reduce negative pressure in the manifold, or even turn it into positive pressure, pumping losses must be reduced. I wish the author of the article had finished testing for fuel economy before publishing the article. Right now it's just kind of a tease. I'm curious how the ECU will react to what might be unusual ratios of MAP vs TPS. If this were a MAF controlled engine the results would probably not be positive, mpg wise.