when im shopping around online for an air intake system i keep seeing these little adapters i understand were they go i just was wondering if they are legit. and when i was looking at my car i see that on the air box there is another sensor i wanted to know what i do with that. cause i know if i disconect my mass air flow sensor my car wont start. so i wanted to know if that does the same thing or if i just disconect it and leave it alone. i just wanted get some answers before i actualy buy one.