My first 4-Stroke was my 2012 WR450F with fuel injection. I have a friend who has been telling me to cut out the screen inside the filter cage on both my 07 YZ450 (Non-FI) and my WR. I have some concerns with doing it because I had a friend who's bike burned up in the early 90's after a backfire from his carb. I'd be doing this for a chance at better throttle response on the YZ, and just to see if it helps uncork the WR any. Thoughts?