knightrider

on the air flow mass there is a little door that swings open and closed like a valve almost. I was wondering if i were to remove this would anything happen. I thought maybe this it is how it measures the air going in. in relation to how far the door opens. if not I could see this being a big restriction device and when removed it would open up a good amount of air. let me know what you think. anything is appreciated.

Bill

Don't do it!!! If my memory serves well, that flapper is used to tell the ecm how much air flow is going through the maf. Maf's aren't cheap new($497 at the dealer) but you can get one cheap in a junk yaard.

mazdaspeedwest

uhhh, yes, the flapper door is most certainly needed. You are correct, it's there for a reason, to let air in or not.

obeytheflag

man the mass air flow meter is like complicate stuff...try not to mess with that. i messed up on installing an intake.got a professional friend to fix it man i have the intake in my gaarge..jus DYING TO INSTALL IT!