Be careful of ECU Ign cut for RPM limiting since the MSD sees it as a drop in RPM and it will multispark again, and with a dizzy that could send sparks to the wrong cylinder at the wrong time. Use the 6AL`s limiter chip, or do fuel cut for RPM limiting through your ECU
Thanks for the info.Should have typed in the full model of the MSD as it is a MSD 6AL-2.I'll have to do some more research as to whether this is a problem as I'm reasonably sure you don,t change chips.