Dude, you don't even know what is called the left and right side of a car! Stop making videos like this. Sit in the driver's seat the left front is ALWAYS on the left front, the right side is always the right side, as you sit in the driver's seat,this makes a difference in everything you do on a car. It's not 18 psi, it's 18 inches of vacuum , that's how vacuum is described.