What do you mean no one knows?
I wrote the installation guide for Jet Inc. over 5 years ago.
I performed extensive testing, and found that the sensors it intercepts are not used above 85% throttle.
It does nothing for open throttle acceleration, but requires premium fuel 100% of the time.
Don't install one.
I wrote many warnings on over 8 PT forums, including the install guide at
www.PTdiy.net , warning owners about the issues with Jet.
The info is out there, as long as the forums keep achived posts available in the search engines.