I'm trying to figure out the rate of flow CFM Cubic foot per minute that the factory fan setup provides through the range of RPMs. Idle, 1, 2, 3, 4,000, or a min vs. max number. I've tried a number of searches and even asked my local Toy Stealer when I picked up a part the other day (he had to ask what CFM meant, lol). Anyone have an estimate? Ballpark/estimates are fine. CDan, where you at?