Believe what you like but I don't see how either of those toys will do any good. As mentioned below already, if you saw an increase from using a K&N filter, then the old filter was already plugged... but I don't see how you would even see an increase because of a plugged filter on a modern engine. Most all gasoline engines today use a MAF sensor or Mass AirFlow, so it measures the total volume of air going into the engine and then computes the injector firing time based on that data. If you have a plugged filter or some other gadget stuck into the intake system, the MAF or MAP sensor will account for it... and then fire the appropriate amount of fuel. From what I saw on the cyclone website regarding mileage claims.... they basically only tested an old carburated engine or at best a throttle body injected engine with a more primitive control system, so mabey there was some gain there... but I doubt you would see any gain on a tune port/multi port injected engine.
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Today's Featured Article - A City Guy's First Tractor - by Fred Hambrecht. After living in apartments in Atlanta for more years than I care to remember, the wife and I decided to move to the country. Humming "Green Acres is the place for me..." we purchased a 29 acre tract about 60 miles south of Atlanta. Next came the house, I could talk about that ordeal for another two weeks... But, I want to talk about my tractor! We didn't even own a lawnmower, and all of a sudden we had enough grass to feed all the starving children of the bovine world. Naturally, I talked
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