K&N air filters.

blasterdemon7

I'm not winning.
Nov 19, 2009
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Delaware
Was doing some research on GSX-F engines and found this on the FastLarry's website.


K&N Air Filter
Many Bandit owners choose to put a K&N filter on their bikes. There are trade-offs for everything and this is no exception. While the K&N filter is reusable and offers increased airflow for about the same price as a stock replacement, it also allows more dust particles to enter the engine. The Motor Industry Research Association found that K&N filters stop 97% of particles on an SAE fine dust test (0-20 micron particles). By comparison, the average paper filter stops 98-99% of particles on the same test. This means that the K&N passes 2 to 3 times as many particles as a standard paper filter. It is up to each individual owner to determine which filter is best for them, K&N or stock. While the K&N allows more dirt particles to pass through the filter to the engine, the decreased long-term cost and increased power often outweigh
 
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I've said plenty of times on here as well as other places that they allow far too much material to pass through. The HP increase between a K&N and a good foam filter will be so small you'll never notice in except on a dyno. I never will run them for exactly that reason. I will run my Pro Design through mud, sand, snow, dust, and in a downpour and it will be just as reliable as stock with a very noticeable flow difference. Pro Design, UNI, No-Toil, anything over K&N. If it's foam I'd choose it over a K&N. I prefer overkill on protection over a 0.5HP. I run a well oiled pre filter even on my Pro Design 3 layer foam filter. I have never seen dust or dirt in my intake tract and never will.
 
I've said plenty of times on here as well as other places that they allow far too much material to pass through. The HP increase between a K&N and a good foam filter will be so small you'll never notice in except on a dyno. I never will run them for exactly that reason. I will run my Pro Design through mud, sand, snow, dust, and in a downpour and it will be just as reliable as stock with a very noticeable flow difference. Pro Design, UNI, No-Toil, anything over K&N. If it's foam I'd choose it over a K&N. I prefer overkill on protection over a 0.5HP. I run a well oiled pre filter even on my Pro Design 3 layer foam filter. I have never seen dust or dirt in my intake tract and never will.

This x 2! You can buy a couple of top shelf foam filters, lots of cleaner and oil, and even a box of nitrile gloves for the price of a K&N. Your engine will thank you I:I I've tried no-toils and Maximas and thought they were rubbish; UNI, Twin Air and o.e.m have all been good.
 
This x 2! You can buy a couple of top shelf foam filters, lots of cleaner and oil, and even a box of nitrile gloves for the price of a K&N. Your engine will thank you I:I I've tried no-toils and Maximas and thought they were rubbish; UNI, Twin Air and o.e.m have all been good.

hey! I have a maxima...lol it works good though. flows just as good as my old twin air. no toil is crap though. the oil they put on it is like was and is worse than oem
 
I ran a few No-Toil's on my YFZ and liked them. They were the ones that came in the bag pre oiled. I ordered a box of 10 filters and changed them whenever I wanted and just threw the old ones in a box in the shop.
 
The No-Toils and and Maxima I tried were on dirt bikes (YZ450F and CRF450 respectively) and that might have been the difference between my experience and yours. Dirt bike air filters are flatter than quads and usually have a strange shape with some sharp corners in order to cram them in to a small air box, if they don't fit perfectly I don't trust them. The disposables were fine for some light trail riding but I wouldn't use them at the dunes. I've had K&N's on a few street bikes and a YZ250F, the fit is really good but the filtration can't match oiled foam. I've never tried the outerwears.