Actually, you won't have the same if you remove the Vortec Cover.
My charger is a Magnuson Roots Type Supercharger and according to what I have read, the coolcharger "retains the stock GM long runner "ram air" manifold which generates up to 3 psi of naturally aspirated boost and 30HP. Intake runner length is crucial to power output and is totally independent of the superchargers boost output. Other supercharger kits, like the Magnuson, discard these "Ram air" manifold thereby losing their inherent boost and power contribution." - Ultimate Hummers Magazine.
I have a really in depth article about the various types of chargers out of the most recent Ultimate Hummers Magazine that I will scan and post when I get some time. Its a really good read and details all the pros and cons of the different styles.
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