Air filters - paper vs reusable

[adventure_is_necessary]

What air filter do you run and why do you run it?

 

[4xFar Adventures]

Factory paper air filter. Most people who have tried the K&N oiled filters always seem to get fouled MAF sensors. Could be from over oiling, and you can't really clean the sensor.

The factory option is cheap, though the last couple I bought (from the same dealership) seem to have a little more oil in them. The dust cakes on the bottom almost like mud. Haven't had any issues, but I'm going to buy from another place for my next one. I doubt the dealership went through an entire batch, since I change filters about 2x a year, and it's an older truck at this point.

edit: The comment about the K&N filter is more specific to the D2, not K&N filters in general.

 

[TerryD]

I use A.C. Delco paper filters in my vehicles. I saw a test somewhere that compared the different filter types and the Delco ones flowed the most consistently over their lifetime and also filtered smaller particles than most others. I'll have to try to dig up the article.

 

[TerryD]

Air filter test:

http://forums.nicoclub.com/debunking-the-k-n-myth-why-oem-is-better-t180100.html

 

[maxfederle89]

I like the test posted above. Honestly I went through a phase where I though the whole intake thing was a fabulous idea for any vehicle but with my Jeep I'm just going to use standard filters. Probably try to get AC/DELCO from now on. I like the power of my Jeep WJ V8 so I'm not really looking for more performance. I just want offroad goodies and more gas for fun trips.

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[Cort]

There was a time when factory filters and air boxes were restrictive however those days are long past for the most part and computer adaptive control has changed engine mods to a point that a k and n with cai offer little to non in ways of performance.

As for the filtering itself, stock is better for the life of the vehicle outside of some specific scenarios like desert racing. Save your money and go stock.

 

[RyanC]

Volant intake with a Donaldson dry industrial filter like what is used on construction equipment

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[phxdsrtrat]

It used to be that the factory air filters were too small and the surface area of the filter itself was too restrictive. From what I have seen that has changed significantly (except for my wife's 2016 Terrain that has the same engine as my truck but a filter 1/3 the size). Less restrictive filter media does in many cases mean a high percentage of particulates will get through. The best solution is one that increases the surface area of the filter and keeps the filtration the same. This increases over all flow without introducing issues. Now, this only benefits vehicles that may not be getting enough air flow. My truck is not one of those with it's monster filter box.

I, however, was duped into purchasing the GM performance air intake for my truck (and the exhaust, but that's a different, more positive story). The cone filter only has slightly more surface area than the oem filter. It's also covered under warranty being a GM part. Would I do it again? Absolutely not. It was a colossal waste of money. It does look "cool" under the hood but I'm over that.

Now, with that in mind would I use a washable drop in direct replacement filter? I live in the Arizona desert and dust is a huge factor out here. A washable filter out here is actually economical, especially if you offroad in the desert a significant amount. I would choose a dry style washable filter for economics only. I wouldn't expect it to flow better than the oem paper filter and would insure it filters as well as the oem paper filter.

Just my 2 cents from some of the research I've done over the last year on filtration in general.

-Curtiss

 

[Angel Sterling]

I'm running stock paper right now but I've been looking into an upgraded reusable filter because I'm running turbo.
I found my rig gets to much moisture in the intercooler. (I live in Canada so it poses a problem when it's winter and freezing).
I was thinking about getting a K&N but there seems to be doubts on them (expensive, and just alright).
I'm also looking into a snorkel kit with a filtered ram.
Anyone here have suggestions? I'm looking for a filter with the best moisture filtration.
Stay with a stock filter and run a snorkel?
Thanks!

 

[Taz.beast]

I've always ran paper filters never had any problems.

 

[Overland California]

OEM paper. Cheap to replace, easy to source at any auto store, and works well enough.

 

[Jeremy M.]

OEM filters, the claimed benefits of the oiled ones just aren’t there and many can ruin O2 and MAF sensors


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