Air Filter Comparison

Oldschool

Oldschool

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Lots of members have talked about the stock filter (de-screening) so I thought that a picture or two might help. I just replaced my stock filter with a K&N unit. I chose a K&N over a BMC for the simple fact that my other bike has a K&N and I already had the cleaning and oiling kit. The dealers around here seem to carry nothing else anyway.

a shot of the "top" sides. You can see the "screen" that looks nearly opaque from this angle vs. the K&N.
IMG_0043.jpg

Then the underside of both filters.
IMG_0044.jpg

I did not take a picture of the airbox with the filters in it as the angle was bad for shooting with the tank propped up.
IMG_0040.jpg

The rear screws are not too hard to get to like this using a short screwdiver.
IMG_0041.jpg


A note in case someone was going to ask. The stock filter shown had 9100 km. on it: the dirt shown plus 1 very large dragon fly was remove from under it.
 
I think both K&N or BMC will flow more than the stock filter and the main benefit is that they are reusable. One thing that I saw with the BMC was a larger filtration area and less pleats when compared to the K&N. Does it make much of a difference? Probably not, but I'm just throwing it out there...

BMC Filter:
IMG_0771.jpg
 
I have the kn. Are those graves stacks? Love the Ivan look, have them too.
 
scout said:
I have the kn. Are those graves stacks? Love the Ivan look, have them too.
Click to expand...

Yes, those are the Graves stacks. I got a good deal on them along with the BMC filter ($100 for both) so I couldn't say no. Not sure how much of a difference they made since I pretty much did all the mods at one. I can tell you that the bike is a beast now :D
 
Oldschool said:
Lots of members have talked about the stock filter (de-screening) so I thought that a picture or two might help. I just replaced my stock filter with a K&N unit. I chose a K&N over a BMC for the simple fact that my other bike has a K&N and I already had the cleaning and oiling kit. The dealers around here seem to carry nothing else anyway.

a shot of the "top" sides. You can see the "screen" that looks nearly opaque from this angle vs. the K&N.
IMG_0043.jpg

Then the underside of both filters.
IMG_0044.jpg

I did not take a picture of the airbox with the filters in it as the angle was bad for shooting with the tank propped up.
IMG_0040.jpg

The rear screws are not too hard to get to like this using a short screwdiver.
IMG_0041.jpg


A note in case someone was going to ask. The stock filter shown had 9100 km. on it: the dirt shown plus 1 very large dragon fly was remove from under it.
Click to expand...
Is it required to add an aftermarket fuel management system if stock air filter is replaced with K&N filter?
 
NJFZ1 said:
I think both K&N or BMC will flow more than the stock filter and the main benefit is that they are reusable. One thing that I saw with the BMC was a larger filtration area and less pleats when compared to the K&N. Does it make much of a difference? Probably not, but I'm just throwing it out there...

BMC Filter:
IMG_0771.jpg
Click to expand...

More pleats with in the same dimensional area = great filter surface area and higher airflow. Note airflow is also affected by fiber/filter media area as well. The combinations of Media area, Media restriction and Media rigidity all effect the amount of air the filter will flow. I spent a number of years in the HEPA filter industry.
 
I wouldn't waste my time de-screening the stock filter.
I seriously doubt there is any performance increase by doing it.

I have a DNA air filter myself and apart from better flow the best thing about it (and other aftermarket air filters) is that it's re-usable.
 
Rather than straining the fuel line, I'd just remove the tank altogether. It's not that difficult to pop the fuel and vacuum lines off.
 
johnnyontherocks said:
More pleats with in the same dimensional area = great filter surface area and higher airflow.
Click to expand...

That's what I have always thought, (more pleats = more surface area)
I just wonder how my pipercross foam filter with no pleats compares? It does utilize almost all of the availible area when compared to the others.
getimage.asp
YA-1006.jpg
456_04.JPG
 
NJFZ1 said:
I think both K&N or BMC will flow more than the stock filter and the main benefit is that they are reusable. One thing that I saw with the BMC was a larger filtration area and less pleats when compared to the K&N. Does it make much of a difference? Probably not, but I'm just throwing it out there...

BMC Filter:
IMG_0771.jpg
Click to expand...

sorry for that question , but isnt here the filter wrong mounted ? shouldnt that black rubber be down like in the copperdawg video seen on youtube?
 
NJFZ1 said:
Yes, those are the Graves stacks. I got a good deal on them along with the BMC filter ($100 for both) so I couldn't say no. Not sure how much of a difference they made since I pretty much did all the mods at one. I can tell you that the bike is a beast now :D
Click to expand...

Hi NJFZ1,
was the deal you got ($100) from a shop or a buddy? I'm looking to to try and get the velocity stacks for my bike here in Scotland but the carriage?post is a killer.
ATB
Ewen
 
The after market air filter makes the most power when combined with the modded air box.

I just read Ivan's ECU flash thread over at FZ1OA and he reckons a modded airbox with filter would add maybe another 5 hp to his dyno chart of his FZ1 with all the fruit.
 
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