10 450 k&n filter

Thanks for the info ron!

the holes in the top panels made a huge diference in power on the stock engine.

My testing yesterday revealed a significant boost by adding holes to the scoops. I have a couple extra air box covers and I am going to add a few holes and give it a shot.

anyone wana post up some pics of the holes they are adding? curious to see how ppl are settin up their intakes. id like to do this but it can tend to get dusty around here sometimes

If you pull the duct off, you can see where you want to add the holes, and it's right where it meets with the air box pretty much. This is closest to the filter.

You can make gills, as in 3 1/2"X1.5" oval slots running vertically, or you can do what Ron did and just drill 2 holes on each side.

Adding the screen like Ron did is a great idea, keeps big crap out like rocks, chunks of mud/dirt etc.

It will get loud though, it's not loud at all with the stock setup but once you expose the air filter you can really hear the engine through the intake. For constant high RPM riding you might want ear plugs, no joke.

Pleated gauze type filters like the K&N also tend to underperform in very dusty environments, too. They reach their maximum capacity for retaining trapped dirt sooner than properly oiled foam does, and will start passing dirt sooner as a result.
Like I said, JUNK!
Like I said, JUNK!

No, they're not.

They're superior if your looking for performance

They're inferior if your looking for longevity between cleaning.

It's really how you look at it, kind of a half full half empty and it really just depends on what your looking for and willing to put up with in a filter.

anyone wana post up some pics of the holes they are adding? curious to see how ppl are settin up their intakes. id like to do this but it can tend to get dusty around here sometimes

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That is the best looking mod for the airbox I've seen yet. Looks great!

I get nervous about using any air filter that you can hold up to the light and see the tiny holes that are supposed to keep dust and debris out. That being said, I still have a K and N on my 250F, and it hasn't let me down yet. I am meticulous on cleaning it and oiling it though. I run Foam filters on my WR and other bikes . Foam Filters let me sleep a little better, and I most likely won't purchase another K and N for my type of riding conditions. I think of K and N as more of a street performance air filter. IMHO, just my 2 sense.

well i ordered the new k&n off ebay for 58.50. just got one for now, if i like it ill oder up another mayb 2 more to change out. with adding more holes to the intake, does the filter get that much more dirty in dusty conditions? or do those of u with holes just plug them up somehow? i will probably some, and rivet in some screens as well

slightly off topic. but whats a good rivet gun to use for installing the screens?

just thought id update the thread. dang! i drilled 8 1/2in holes in the box on each side, and you can definately hear the difference. i think it makes the whole motor sound deeper. with the k&n filter, i removed the screen and prefilter as per the instructions. and definately feel the difference in power, i havent been able to ride on a track but just around my backyard is noticable.

I was pretty unconvinced when I removed my air ducts entirely a couple months ago when I went riding. It def sounded louder, extremely loud, and that could easily give the un-experienced the illusion that the bike is faster.

However, there's some really credible sources including a dyno that says the air box mod works and is proven... Just waiting for my exhaust to come in and if eddy has a map for the air box mod I'll join the band wagon soon enough :thumbsup:

very well possible. i wana get the thing on the track! im hopin tomoro brings as good of weather as today was. im savin up to get the power commander to hopefully tune alot better. but im gona stik with the jay marmount map for now. mayb richen up the fuel a little bit?

just for kicks try this. on the last throttle position use 0 -1 -5 and on the ignition try on the fist throttle position -2 -2 and 0 this was just a begining fopr our engine but seems to work well

Cycra racing released their new powerflow shrouds for the 10-11 450 and are claiming 40% more airflow. I wonder how the dyno results would compare with these vs drilling the holes.

Ill let you know.As soon as I get my graphics installed on them and my motor back together I will dyno mine.

the holes in the top panels made a huge diference in power on the stock engine.

I posted this before.I drilled many small holes in the top cover ,put in a dt-1 filter system with a drd pipe and it made a huge difference.I had to change the mapping .I went from the map listed as more power sharpe repsponce to the one for smooth long power.Before the filter mod I did not like the smooth power map but now it is awsome.I do believe the shrouds that give more air would be a plus as well.You can cleary see the filter is getting dirty all over

instead of just at the bottom.There is way more air getting in.

I posted this before.I drilled many small holes in the top cover ,put in a dt-1 filter system with a drd pipe and it made a huge difference.I had to change the mapping .I went from the map listed as more power sharpe repsponce to the one for smooth long power.Before the filter mod I did not like the smooth power map but now it is awsome.I do believe the shrouds that give more air would be a plus as well.You can cleary see the filter is getting dirty all over

instead of just at the bottom.There is way more air getting in.

could you post up some pics of the holes you drilled?

could you post up some pics of the holes you drilled?

Its the cover with two bolts you remove to service the air filter.

I drilled about 25 or 30 holes in it.You can see clearly where the filter is pulling my air.

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