it is based off of the vw system....the sc is feeding the turbo and the fitler by the turbo has a one way valve inside the piping so.....

when the turbo starts trying to pull more air than the sc is feeding it, the one way valve opens and lets in fresh air. right now im talking to my sponsor about getting the NST pulley kit so that the sc pushes even more boost. basically, the sc is taking care of turbo lag