1:27 PMMr. Luddite
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Do you really think K&N air filters make a difference? I've tried them
on two different vehicles, one with a carb and one that was fuel
injected. Other than being a bit louder under full throttle, I didn't
see any performance difference. Isn't it true that a stock air filter
is designed to pass the maximum amount of air that the intake can
handle? If so, of what benefit is a K&N? They may be capable of more
air passing through them under test conditions but if the intake only
demands what a stock filter can handle, what's the point?
......

Richard, I believe the KN is made for more extreme measures like dirt racing. Possibly giving better filtration but also more air flow while half clogged compared to OE when new...