we got three local sts equipped vehicles, no noticible lag, on the trans ams got full boost below 2800 rpm

 

Take into consideration the length of your charge pipes with an IC and then compare that to the distance on the STS sytems. They are relativly close in overall length. Turbos mounted that far from the manifold won't reach nearly the same temp as your standard mounting will.
It's a good Idea that needs work. But it does have sound principle. I think they get knocked because no one else thought of it and they put a patent on the Idea. Very much a double edge sword.

 

i think there getting knocked about it because they thought out of the box. it does work though, and it works very good.