I just used this stuff the other day. This goes in through your throttle body and cleans your intake. Its a pain in the ass to use because you have to have the bottle turned upside down with the straw 1/4" away from your throttle plate and the engine has to be on. you have to hold the engine at about 1500rpm to atomize the spray correctly. you have to empty about half the bottle into the throttle body which takes a little bit. I clean my throttle body with TB cleaner often but this stuff gets all the down the intake.
Hahaha my 5 year old said that yesterday, I asked where he learned he shyly points at me fml it was funny though