Ok, hence the reason for the DP and Perrin BCS. Even w/a DP the OEM BCS is maxed and w/only the EBCS the turbo is restricted given the targets. I think I understand this correctly?
Yep
What's an install like on those two items? DIY or shop?
Obviously depends on your level of skill/experience. The DP is by far the most involved, but is doable if not in a hurry.