I bypassed mine w/ a MSD Blaster 2 and it ran great. Some say it will kill the ECU. I ran mine for hours on end, car running 195 temp constantly, on 90 degree + days with zero issues.

ECU was flush mounted on the firewall. If it was going to overheat and burn up like is claimed, that would have done it. Just a parts store brand ECU, nothing special.

IMO the system worked a little better. A 12 volt coil will like having 12 volts.