Keep in mind that the dyno graph is essentially a tuners signature....so for comparison here is another...and please note that 10psi of boost is reached at 3,500rpm. So if the boost pressure is there, and the power torque is not (when comparing kits) then it is a timing/tuner thing:
Hope that helps. Also, I do not have any "shop" dyno runs. All these are from customer and tuners from around North America.
As for the install, the V 2.0 is easier to install than the original V 1. The V 1.5 is the same when it comes to the install as the V 2.0.