MY VEHICLE IS MISFIRING OR BREAKING DOWN UNDER LOAD. WHAT SHOULD I DO?

This problem is NEARLY ALWAYS associated with low voltage at the unit, preventing the unit from operating correctly. The unit is actually turning off, and back on as the coil charges and releases energy. The best possible remedy for this problem is to wire the Ignitor units RED WIRE directly to a switched 12-volt source away from any voltage reduced circuit, such as a resister wire or ballast resistor. These circuits usually are in the wire from the ignition switch to the coil. The Ignitor™ lead (red wire) can go directly to the ignition switch or any other “switched” source on the fuse panel. The coil will still need a minimum of 1.5 ohms of resistance, either internally such as the Flame-Thrower or in the form of a resistor wire or ballast resistor. We think you will find when you have these “breaking up” problems, low voltage is the culprit!
We also highly recommend seeking a qualified auto-electrician to make this adjustment for you.
For more information on how to Test Voltage and Resistance, see this info sheet.