I believe I'm one of the more qualified individuals to answer this question. I have, however, NOT had any seat time on track with the Kraftwerks kit. They are not willing to allow me to drive their car for me to get impressions.
However, @
Zach3794 has stepped up to the plate, and I'll be doing some logging in his car at the next Winmax 86 CUP event.
Give me a list of specific questions, and I'll answer them to the best of my ability. The more specific your question, the better I can answer.
For the record, CSG is a dealer for both rotrex kits, as well as the AVO turbo kit, among other FI options.