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Message: <blockquote data-quote="drexchan" data-source="post: 393017" data-attributes="member: 6936">I didn't say that you were wrong.. i mean trex92 (hmmm drex lawan trex.. haha!!)See...it's not the matter of fan RPM, it's the flow rate, measure in liter/minute or cubic feet/minute. 2 fans with the same RPM can have different flow rate, due to the number and the design of the blades.Engine intake (air) flow rate is based on the engine RPM and the volumetric efficiency (V.E.), not the flow-rate the fan/e-supercharger can provide. The fan/e-supercharger do provide high flow rate if stand alone. But in the intake hose, they will just increase the V.E. If powerfull enough, compressed the air in the intake system (V.E. > 100%). For example, engine needs 100 CFM, fan spins at 2700 rpm, which when it's stand alone, can provide 220CFM, the engine will only take slighly higher than 100 CFM... maybe 10% higher, and increases the V.E. to 95% (if, let say the stock intake provide 85% of V.E.).About the sensor signalling. See, the fan/e-supercharge is installed before the filter element, and the MAF is located behind the filter element. The MAF measures only what the engine takes. Futhermore, most of the car is now running on MAP sensor (even further behind, in the intake manifold) instead of MAF sensor. Like wise, higher engine intake, higher pressure, higher reading, more fuel).So, your engine take slightly more air because the V.E. has been improved, MAF/MAP sensor measures slightly higher flow rate (or manifold absolute pressure), as high as what the engine swallowed, injectors inject slightly more fuel because the ECU told them so, you will get an accurate mixture, at bigger volume, combusted in a same cylinder.. You get more power. Not correct also if your fan can provide a higher flow-rate than the engine intake at red-line revolution. It'll not block the flow.******************It's not a matter of "can work or not", it's a matter of "right material, right design and durability. If the fan concept doesn't work, a belt-driven supercharger will not work as well. But why it works?p/s: Dun ask me what is V.E., MAP, MAF and the theories behind the story of "how EFI works). Read up.</blockquote>

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