according to what i've read k&n flows so well(when clean) that it doesn't filter enough. and when oil is tested from a vehicle using a k&n it has excessive sulfer content. i don't know how that affects the an oil's lubristic properties, but it doen't sound good, for an engine running high pressures. but i don't remember where i found that.
and from experience i like k&n for it's re-cleanability and will continue to use it on my uncharged(lower operating presure) vehicle. foam filters may filter well, but i think they just plain suck. rather don't let the engine suck as well. sence my turbo car is not highly moded, i will continue to use the paper filter that was engineered for the car. when i am able to use all that extra airflow from a cone filter, or better, a different intake will be considered.
so, what are you making now alex?
|