The throttle bodies in picture don't have the slot I was asking about. Go on ebay and look at item 182026457181, the slots I was asking about are in the 3rd picture and are located at 3 and 9 o'clock on the TBs. Didn't understand the "yes, that's what it is" comment, did that apply to my "quicker warming" theory or your "vacuum orifice" theory? Not arguing, just asking.