dude.. check out www.toyota3tc.com you'll get a better answer from the 3TC guys there. 
Why?email me to [email protected]
yeah and toyota also has to follow srtict fedral regulations that need not apply to all states. iowa and nebraska dont have smog check reguraly, so why have all that bull shit that they have to put on there when i dont have to have it where i live? i would rather take off all that extra weight and hp robbing crap and have a nice running car that gets better gas milage and powerThe vacuum hoses cost Toyota money, but Toyota spends the money anyway because the hoses are essential to help the car run good.