Sign in to follow this  
Followers 0
2012 450 xc-w

Backfire Screen in air filter cage

5 posts in this topic

I always cut mine out with a razer knife.I always cut mine then install a twin air filter.I have to up a jet or two to compensate for the extra air flow which means more hp Im sure.I guess the down side is in a backfire condition and possible fire.I have never heard of a bike yet that did and every one I ride with cuts out the screen.I think it lets it breath a little better and better throttle response.Give it a try!

Share this post


Link to post
Share on other sites

When Doug Henry was riding YZF's in Super Moto the first time around, before his two years on the CRF, his crew tried an number of things with the air box, including removing the screen. They did not find that it helped in any way, and they concluded that the reason was simply that the filter itself was more restrictive than the screen was. Removing it did nothing, since the most restrictive component in the air stream was still in place.

Since that time, I have seen no hard evidence that establishes that there's an advantage to it. In tests I did myself, a vacuum gauge showed no pressure drop across the screen on my YZ450. Lot's of people remove it, and a lot of them swear it did something, but I've never seen a machine say so. :thumbsup:

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0