Uni or Moose

[Live4today]

Just like my name, I have an 84 Yamahauler:headbang: , and am looking to do anything to up it's performance possible for little cost. Air filter is step one. Just wondering which one is better,Moose or Uni, they are both the same price, just wondering if one is better than the other, or if one is just pure $#!T or what not. I know it's not going to make a world of a difference, but every little bit helps. Thank you much in advance folks!

[86waterpumper]

I like uni filters, and run them on everything. I would trust them over a moose one I believe, especially if they are the same price.

[olive123]

and then a upgrade on your carb...cheap...THEN a pipe.
RIPPIN!!!

[hondakid200x]

I am all for uni...Clean your carb. and rejet it for your conditions. Thats one of the best things you can do for your bike/trike with out spending money. Also, get your suspension dialed for your type of riding, your ride is only as fast as the suspension lets it go...

[Trikotic]

i say rock the k&n. good stuff but not cheap. lasts a long time too

[86waterpumper]

Yeah rock on with the k&n dude...and don't forget to pick up a few dozen piston rings while you're at it :rolleyes:

it is pretty common knowledge (or should be) that in the process of letting more airflow in such as k&n's do, they also allow more dirt in. This is all good and fine for a dragstrip or road racing engine I guess, where people are rebuilding motors alot anyway, but can get pretty ugly when used outdoors in the dirt if you want something to hold up. Look on the web for yourself, there are countless references to this, such as this one.

http://www.audifans.com/archives/1995/01/msg00958.html

[atvpsycho]

I would suggest the k & n and and outerwear and ditch the whole airbox.

-Austin

[Tyler 54]

I say UNI. I agree that K&N lets in the most air, and gives you trhe most performance, but by the time you put an outwear on your K & N you might as well have just bought a Good foam filter. The outwear defeats the hole purpose of the K & N's Massive intake of air. If It was mine I say Foam UNI Filter.

just my 2 cents.....

[350Xccelerator]

definetly UNI

[86waterpumper]

haha yes yes YES! finally someone gets it! Why in good grief would I go buy a air filter that is 35 or 40 bucks (whatever k&n's cost) and then go buy a 15 dollar outerwear cover to strangle it down, and end up with the same thing flowing wise as a 20 dollar uni filter, that STILL probably doesn't trap as much dirt?

[ejc042]

The only problem I run into is it is very dusty where I ride and I dont use an airbox. With the foam filter I get a glogged filter in about 30 minutes. The K&N with outer wear does not clog up as fast.

[86waterpumper]

so run a 20 dollar uni single stage with a outerwear :D

[Tyler 54]

WOO HOOO :hail: 86Waterpumper you are the man I hate K&N's about as much as you do. My buddy ran one on his four wheeler after I told him not to. After about ehhh 30 hours of use, his piston rings were gone!!!

[Red Rider]

Redneck & 86wp, you do realize that you still need to oil a K&N airfilter don't you? I totally disagree with your opinions of K&N airfilters. I had one on my ATC110 with no problems, I'm on my second K&N for my 250R now (the first one finally wore out after 14 years!) with no problems, my brother has been running one on his 250R for just as long with no problems. After extensive riding in the sand dunes (some of the finest sand grains you'll ever find), I've pulled off the airfilter-to-carb boot, and there's never been a speck of dirt stuck to the oily inside surface. If you clean them as per the instructions, they'll give you a very long life and awesome performance.

[86waterpumper]

250r rider, that's cool you've had good experiences with them. Everyone is of course entitled to their own opinion. I'm not saying they will wreck your engine in one day or something, and possibly with a outerwear mind you, they might filter decent. I still fail to see how they are worth the money that it costs. Maybe you have tried both kinds, and find the k&n to give alot more power with the outwear. I certainly can't see the point in the original poster buying one, as he owns a "yamahauler", and it's not going to make a difference anyway that is very noticeable at all on any utility type trike by itself. I am aware of the fact that they must be oiled. I can and have read tons and tons of bad reports on k&n's all over the web, but I don't base my opinion on that.
When I bought my 350x it had a nearly new k&n installed. I rode maybe one or two rides on it, and then took it off one day working on the bike, and found all manner of crud that it had sucked in into the airboot. This was dust and dirt by the way, not sand. Dust can be much finer than grains of sand. The clamp was tight by the way. I changed it out for a dual stage uni, and haven't had the problem since. I also can honestly say that I can't tell one single bit of difference in the power after doing so. I do see the point about a outerwear possibly being needed if you have an exposed filter, and running in wet sand, etc...but the outerwear itself is to be thanked for that and not the k&n I believe.

[Red Rider]

86wp, I do agree with you about everyone being entitled to their opionions, and I guess it's obvious that we disagree on this particular subject. Not a big deal. No, I've never tried a Uni-Filter, so I've got nothing good or bad to say about them. I had good results with the K&N on my 110, so when I got my 250R, I got a K&N for that also. I noticed a significant increase in power with the K&N, and since it never given me any problems, I've stuck with the brand. Also, there's plenty dusty riding conditions at the dunes too, not just the fine silica that I used in my example.

[Kev250R]

I'll add my bit to this debate as well. I use K&N's in almost everything I own. The only two excpetions are my generator (they don't make one for it) and my 4Runner (I'm waiting for the OEM filter to need replacing).

I've run them on both my 250R's without an outerwears cover (though I once wrapped one with a pair of womens panty hose for an impromptu trip to the dunes). I've also run a drop-in filter on my Toyota T100 P/U for the past seven years or so with no problems (though I've oiled it several times and cleaned it a couple).

I've heard good and bad things about them too, but I do most of my own wrenching on my stuff and haven't seen any problems yet, and this is after doing a top-end rebuild on both of my 'R's.

The one exception with regard to K&N's and cars is don't use them in a Ford!!! They will basically destroy the Mass Air Flow sensor! This has to do with the style of MAF that Ford uses (the oil on the filter pollutes the filament in the sensor and makes it stop working). I had this happen on a Ford Ranger my GF used to have and have known numerous others who have problems with Fords and K&N's as well.

But as far trikes/bikes go they seem to work as well as any other filter, with less mess when it comes time to oil them.

--Kevin

[bigred110]

You can install a uni pod air filter, I believe thats the name of it, and then install a outer wear on it. You can ditch the air box after wards to.

[olive123]

not if you like to ride through water...

[Grant2K]

sorry to bring up and old thread, but where is the cheapest place to buy a UNI filter? Rocky Mountain has then for $12.99 which is the best i've found. just wanted to know if anybody has found better.

[sandrooster]

Originally posted by 86waterpumper
I still fail to see how they are worth the money that it costs.

K&Ns have been working just fine on my stock bore 85R to this day.

To me, their worth is in the reduced maintenance required with a K&N to keep things running. I had to remove, clean, and reoil the Uni after every time I rode. I sometimes let the K&N do its job for a couple of months.

Now, does anyone question the ability of a K&N to remain functional better than a Uni when its getting clogged with dirt?
I don't.

[Tyler 54]

No because the K&N lets the dirt go strait through to the motor :rolleyes: Real good on piston rings.. I think you have it all backwards. K&N's should be Oiled after every ride. The only reason the UNI is getting clogged is becasue it IS STOPPING the dirt intake.

THATS BEEN MY PERSONAL EXPERIENCE

just my 2 cents


-Tyler

[86waterpumper]

hahahah this thread is the funniest thing I've read in quite a long while. Let's all get mad at the air filter for clogging up, I mean we wouldn't want it to do it's job would we? Hey dudes, woudln't it make more sense to just not run a filter at all, after all, we wouldn't want to have to take the time to stop and clean anything, and that way it would never clog up at all!! I don't know where are riding sandrooster, but it sounds pretty ridiculous to have to clean and reoil a foam filter EVERY time you ride. I ride plenty of rides on mine, w/o them needing cleaning. I take it you done tests with both filters riding at the same spot correct? So tell me what the dirt does when it hits the k&n??? Obviously you don't accept the theory that it's going into the motor, so I suppose that it's magically being bounced off by the k&n super forcefield back into the airbox or on the ground eh? Don't say it's the outerwear either, such as ejc042 did, as this outerwear has nothing to do whatsoever with a filter, but with something placed over it, therefore it shouldn't even be entering into the debate. The very fact that the product exists is a crutch for a lame filter haha! All of that isn't the point though. The k&n's cost probably double what a good foam filter does right on the front end, and there is still plenty of maintenance. You have to buy k&n spray cleaner, and spray oiler, and that crap isn't cheap. Also, olive brings up a great point. Not all of us run dunes, and sand, when it comes time to slog through a creek, which filter do you think will let more water pass through? Take both filters, pour a six ounce cup of water evenly over both and you see which drains more through LMAO! :rolleyes:

[Civiblu]

I used a uni on my 350x and loved it and I just put it on my YZ, with the no toil oil. best combination i have seen. I like k&n filters but not for atv's because when u look at them from the inside in the light you can see a ton of light with the uni u don't see any, so to me i think i would get more protection.

[NOS_350X]

Civi the one on ur 350x wasnt oiled. (no prob tho i oiled before we rode)
I have a uni on my 350x &yz125 and a K&N on my dads 350x. I bought a ESR because it looked cool and is said to block more than the K&N but haven not installed it yet.

I personaly like the UNI the best. I will put them on everything unless i'm going to be rebuilding the engien every 5 hours. With the UNI you can easly tell the effect its having and how much its saving your engine. The K&N you can tell it dosent block as much because it dosent collect as much dirt. It dosent matter what you say the UNI will block more dirt than the K&N, so its all wether you can afford the rebuilds on your engine.