Backfire screen
  • User avatar
    Harkon
    Posts:103
    Joined:Sun Jan 26, 2014 5:46 pm
    Backfire screen

    by Harkon » Fri Apr 04, 2014 10:20 am

    I appologize if this has been asked before, and especially because many would consider this a pretty elementary question. However, here goes ... :oops: :oops:

    What exactly is the backfire screen and how do I remove it. Is it the screen on the cage the air filter element is mounted over, or is there another screen inside somewhere. My wife's TTR225 has an actual metal screen in the air box outlet, wondering if there's something similar I can remove on mine, or if it's just a matter of cutting the mesh out of the filter cage.

    I admit, I haven't yet removed the air filter element as the bike only has minutes on it. Doubt we're even at an hour yet, and the filter is still new.
  • Leardriver
    Posts:462
    Joined:Wed May 05, 2010 10:33 am

    by Leardriver » Fri Apr 04, 2014 10:23 am

    I've never been around a bike that has the screen left in. It was put there by lawyers, not engineers.
    I hear over and over that removing the screen doesn't increase power, but the dyno shows otherwise. It is almost one hp on a 450.
    You can watch the A/F mixture change when you dyno before and after removing the screen.
  • User avatar
    Harkon
    Posts:103
    Joined:Sun Jan 26, 2014 5:46 pm

    by Harkon » Fri Apr 04, 2014 1:01 pm

    Thanks Leardriver. So is it the cage, or is there another screen somewhere?

    <EDIT>
    Sorry, it was a stupid question. Found an example on youtube, and it was the cage. Sorry for the newbie question.

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