I have one, too. It does all jaguar says it does. I can ride faster with a lower level of vibration and it fires off my extremely high compression motor, no troubles. I did open the spark box up, very hi quality components and hi quality work, all the component ends were bent over and soldered to help insure that nothing could shake loose. While I was in there I silicone'd the openings and squirted a pillar of silicone under the board to isolate it from vibration.
When I gather parts for my second build this is on top of the list along with a SBP expansion chamber. It's that important.