D Danny New member Jul 26, 2009 #1 if i have a K&N CAI installed on my 2009 Mazda 3, will i notice an improvement in gas millage? also, would there be better acceleration? i know it'll only add like 5 HP, but is it worth the $$$? i have the 2.0 engine.
if i have a K&N CAI installed on my 2009 Mazda 3, will i notice an improvement in gas millage? also, would there be better acceleration? i know it'll only add like 5 HP, but is it worth the $$$? i have the 2.0 engine.
