Two oil changes and 4400mi later, I'm ready to start BOMBing my 2001. 5. How many mi should I let the stock ISB go to get settled in before I start with the upgrades? I already has gauges in my truck, now I'm ready for a box of some kind. I've been leaning toward the EZ, but I've got a buddy that works in a diesel shop that is a BD dealer and can give me a smokin' deal on a Plug-n-Power. I've searched and found lots of pro's for both of these, but what about the cons of these vs. each other?