Air filter

TomsNeon · Post by **TomsNeon** » Fri Oct 19, 2012 3:10 pm

As usual, questions, questions, questions LOL!

This time, which air filter is "better" than another and why is K&N so highly recommended, even in a stock setup? I ask because I'll need one soon when it's tune up time and I got the car not too long ago.....I have been told to remove resonator box, optional to replace bellows tube with steel tube, add a K&N filter and then I'd have a make-shift CAI with the stock parts which is fine - thank you Jeff and occasional demons!! - since $ is an issue. So why is K&N so highly recommended? What's wrong with the huge Fram air filter in the airbox now? Again, just asking so please inform the ignorant. Thanks all!

Post by **occasional demons** » Fri Oct 19, 2012 6:02 pm

The real advantage that the K&N has, is it can be cleaned, re oiled and reused. Eventually it will pay for it's self. Since fund's are tight, I would just stick with the conventional filter, if you aren't going with the fender mount CAI.

If it is in an area that will get water hitting it occasionally, then a cotton/oil filter has the upper hand. The water will either roll off, or if sucked through (this is not referring to a submerged scenario) it will be broken into small harmless droplets. A paper filter will soak in the moisture, and severely restrict air flow.

Again, buying it for a performance/fuel mileage gain alone will take a lot of miles to come ahead. To be honest, going with a K&N on my 4.0 Jeep made no difference at all.

In reality, a new clean paper filter will probably flow more CFM than the stock TB.

jckevns · Post by **jckevns** » Fri Oct 19, 2012 7:29 pm

As bill mentioned the kn filter can be reused. Between all the vehicles im using 4 kn filters.
On my 4.0 jeep I noticed a performance gain but I put the filter on with a larger tb n tb spacer n new intake
On my mr2 im using n oem replacement kn n I dont notice any differance