Did not come with one my 2005 did not have one either.
ill have to double check that aswell. ill take my air hose to it tommor with the airintake off and see if i can hear any air go thru ! thanksI don't think its open, actually quite sure it not. It is just a what looks to be an opening for some kinda valve but nothing is there. Probably used in many of any other applications that it could be for just not our Mazda's.
If that big hole was open I doubt the car would run.
If it was open, then your engine wouldn't even run or would constanly rev to the moon. It's simply a case of the same mold being used for multiple applications.ill have to double check that aswell. ill take my air hose to it tommor with the airintake off and see if i can hear any air go thru ! thanks
Have you cleaned the throttle body's bore and plate?That is strange. Does is your idle sporadic almost dies low rpms 400 500?