I even sent some log files into a tech at Haltech USA, but never heard anything back. From all the research I did about it, most guys were having trouble with the older versions of haltech and the CAS. At certain RPM's it would cutout once the harmonics/vibration in the engine caused it loose proper firing signal. The one I worked on was the same. It would hit 7k and cut like a revlimiter, but that was set to 7800 limit.
"Speed costs money. How fast can you afford to go". -DarkZide