Do either the Juice or EZ raise boost pressure or does boost remain at factory level?
The boost level is higher because the additonal fuel creates more drive pressure to the turbine wheel. The chip does boost fooling, witch is telling the ecm that the boost is lower than it realy is, so it does not set a check engine light for high boost level. I also went from 30psi to 40psi on stock turbo with only the juice.