Great For Stock With AOS
Many of you ask what the rubber cover is for. Well when you buy this to delete the sound tube, you were supposedly not suppose to delete the whole tube. Instead only the single pipe connecting from the intake to the sound generator. The other is to install on the "diaphragm". I after you take out the tube it should be an open male connector and that's why it's shaped the way it is. I have circled where it goes. It is not really worth the $14 unless you like showing off the M on the plug, but there are universal aluminum adapters that are exactly the same with no branding.