Just got a Power Puck in the mail and it has something rattling inside of it, is this common or should I pull the cover off and have a look see inside.

What goes into the map sensor, the Quadzilla boost fooler or the Puck first on an '05 5.9? Thanks.

What's the deal with this Puck, is it ok to run on my '05 common? The Puck is the D7159 and it's not made anymore I guess but I can get it for a good price. I'm going to stack it with the Predator so I am also wondering what kind of #'s people are seeing with this set-up.