Hi.
Just a thought. If you were to fit the 4age crank pully to a 4agze what would that do to the boost levels of the s/c?
The pully on the age is smaller than that of the gze.
Well, if the AG pulley is smaller than the AGZE then it will drive the SC slower thus producing LESS boost. Either bigger Crank pulley or smaller SC pulley to up the boost!