breathe
Don't want to rain on anyone's parade:
Unless a filter flows more CFM you aren't getting anything out of it. The laws of physics apply to the K&N, just like the cheaper stock filter.
I doubt the K&N has a higher CFM (in practice/reality/real world application) than stock. It's nice that they're reusable, however often after 'cleaning' they are so oil saturated they actually are more restrictive.
A waste of $$ IMO.
Get fresh OEM-type paper elements every oil change and you'll be good-to-go.
P.S. changing (i.e., replacing the used one) the air filter to a 'basic' (albeit new & clean) FRAM on my 1998 Ranger netted a 3+ MPG increase.
Last edited by Minihaha; 06-09-2014 at 09:32 PM.
Reason: added info
ゼロ
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View my fuel log 2014 Mirage DE 1.2 manual: 33.4 mpg (US) ... 14.2 km/L ... 7.0 L/100 km ... 40.1 mpg (Imp)