rev. at 8050rpm

[TTChevelle]

I have a DIS-4 msd box and a fast sys.it acts like a rev limmiterat 8050 rpm at the track but on a chassic dyno no problems.
Just wanted to know if anyone ever heard of this and why its doing it?all stage 2 motor.
Thanks Dave

 

[Chyke]

Are you sure which one is causing the problem. Set both units to the rpm limit desired and see what happens. Try eliminating the MSD from teh system once and see what happens.