[billaj]

I tried to search for this but I couldn't find any info.

I just want to get a air filter, nothing else. Are K&N air filters too high performance for all the dust I will get when I offroad? What is the best air filter for offroading?

 

[cst silver]

I have a k&n intake on my truck. Open box.. So the filter is just out in the open.. Also i dont have splash gurads in my wheel wells. Cause of the glassworks fenders. I take my truck out to the dezert and dunes and i have never had a problem i just clean it like every 2 weeks

 

[billaj]

What is the advantage of leaving the box open?

 

[cst silver]

I totally just took the box out. With the glass works fenders i can get alot more colder air in my engin bay.... My filter is almost above my tire so alot more air can get to it then just having it stuffed in a stupid box

 

[54warrior]

Just do the DIY AirBox Mod, then get the drop in K&N Filter!

 

[SDTitan1]

Just do the DIY AirBox Mod, then get the drop in K&N Filter!

haha, great idea 54 .... or with most of the CAIs, you can get a prefilter, excellent protection against water, dirt, dust for the cone

 

[Juday]

Just do the DIY AirBox Mod, then get the drop in K&N Filter!

What he said. That's what I've done and it works just fine for offroad. Trust me, I work for an excavation company and mud/dirt/dust is my job. Just make you check it more often than regular if you're in extremely dusty conditions.

 

[jasonmotox]

Just do the DIY AirBox Mod, then get the drop in K&N Filter!

Did anyone ever prove that it helps and doesn't hurt the vortec thang?
I got my air filter ruined while doing some mudding and when changing it over to the K&N drop in I noticed something..
To me it looks like the intake tube from the fender forces the air to swirl over the top of the drain hole in the bottom of the filter box. It has a raised box/crate pattern in the bottom of the box that I think helps collect water and heavy dirt particles. My thoughts are, if you cut the intake back then you are altering the vortex that helps clean the air before it hits the filter.
I dont know, just a thought?

 

[FabHappy]

If you are gonna be offroading I would use a highquality foam filter like the true flow. I was at SEMA in 04 and watched a demo of a high quality foam with a good tackifier against a oiled K&N. They dropped dust and dirt and you could watch quite a bit of the fine stuff go right through the K&N. A little went through the foam one too but not nearly as much. Foam does not flow quite as good but if your gonna be in dusty dirty places I think the powerloss is negligable.

Edit: Just to be clear there was a vacuum on the back side of the airfilter, the dirt was not just dropped through, it was sucked through and onto another white ultrafine filter so you could see it.

 

[billaj]

Well I just picked up the K&N. I wish I would of seen your post FabHappy before I bought it. I would of checked out the foam filters.

You are suppose to get better gas mileage with air filters right? If so, has it been proven?

 

[DezertRunner823]

that's an old true flow air filter demonstration...

anyhow, just get an aftermarket cone filter and any one of the universal-sized K&N pre-filter to place over the filter. thing works great! acts as another layer of filter media yet does not hinder airflow and more importantly, since i've got prerunner fiberglass reinforced fenders (better than glassworks) the filter just sits completely exposed to the elements, the filter is treated with a repellant hydrophobically so any water is kept from being ingested. now if you actually submerge the filter, you're screwed, but everything else... works like a champ!


HERE'S INFO FROM THE OUTERWEAR'S WEBSITE this is the actual company that manufacturers these pre-filters or as K&N calls them "prechargers" great bit of info on them.

http://www.outerwears.com/faq.html

 

[yamatitan]

Actually they do pretty good submerged too. I have one on my ATV and its been under water with only a couple of drops getting in. I would highly recommend them they work great.

 

[kartman]

If you are going to spend time in the dirt the best is the AEM Dry thing, the oiled ones get real messy.

Get an outwears prefilter for it also

 

[kronos2]

If you are going to spend time in the dirt the best is the AEM Dry thing, the oiled ones get real messy.

Get an outwears prefilter for it also

i second that. aem brute force i think. its so much easyer to deal with then the oiled filters. as soon as i can pic one up, im removing my K&N cool air intake.

 

[FabHappy]

that's an old true flow air filter demonstration...

anyhow, just get an aftermarket cone filter and any one of the universal-sized K&N pre-filter to place over the filter. thing works great! acts as another layer of filter media yet does not hinder airflow and more importantly, since i've got prerunner fiberglass reinforced fenders (better than glassworks) the filter just sits completely exposed to the elements, the filter is treated with a repellant hydrophobically so any water is kept from being ingested. now if you actually submerge the filter, you're screwed, but everything else... works like a champ!


HERE'S INFO FROM THE OUTERWEAR'S WEBSITE this is the actual company that manufacturers these pre-filters or as K&N calls them "prechargers" great bit of info on them.

http://www.outerwears.com/faq.html

I figured that as a possibility but I really could not see anything shady being done to weigh things in their favor.

 

[DezertRunner823]

I figured that as a possibility but I really could not see anything shady being done to weigh things in their favor.

what? :ftard:

one of these days gonna take the oil AEM filter off my ButtForce and stick an AEM dry filter. well, till the filter cleaner fluid and filter oil spray run out. then just slip the prefilter over the new filter and voila.