Posts
173
Joined
12/5/2013
Location
Pittsburgh, PA
US
Edited Date/Time
3/3/2014 5:29am
I've been hearing that a lot of people remove the screens from their air filter cages to gain more HP. I heard it works but bikes catch fire occasionally. First off, has anybody tried it? And will I have to re-map my bike? I have a 2012 crf250r.
The Shop
Airflow does equal horsepower, or at least throttle response.
Honda makes it super easy because there are a few metal tabs that you bend and pop it out. Kawi and Suz are a bit harder.
More air in/out =HP.
Did to carbed 06 CRF250. Yes it made a NOTICEABLE difference.
Mapping slighly richer, I'm sure you'll notice it.
Simple, more air requires more fuel as I've found out
2006CRF450
This won't help you out any, but I'm home sick and bored so...
I can't say if removing the screen changed the personality (as in HP increase or a change in the power delivery) of the bike in any way shape or form.
Is it even possible to detect a 1/4 or 1/2 horse power gain in a 450? Not in my world.
In my case though...who frickin' cares? I have not EVER been able to use all the available power on tap as it is,
I have owned several 4 strokes in my day, stock and modified, and none of them had a "backfire" screen.
The possibility of your bike going up in flames is real, but personally, I would not let that dictate my decision to de-screen the air filter. But that's just me.
Good luck with your 250.
Pit Row
The throttle body will only allow a certain amount of air through, like previously stated, so the max HP wont change, but how quickly it gets there will.
As far as I can tell (I rode the bike a few times with the screen), it just makes the power a little bit snappy-er. IMO, take it out, the filter wont catch fire and it helps power A LITTLE.
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