The old CPC was a GREAT box. I have not driven one of the new ones with a boost module in it yet, but I have driven the EZ extensively and did not like it at all. I feel the VA/CPC comes on earlier and harder and holds till the end as hard as the EZ. For me I would rather run a VA with a boost module at the extra cost than to run an EZ. This is just my opiniond, but I do have extensive experience with both types. You could not GIVE me a torque dog. Hope this helps.