Higher Voltage Is Always Better -False
More is nearly always greater in the domain of performance. More boost, airflow, fuel, horsepower, and performance, to mention a few. In the world of ignition coils, however, the greater voltage does not necessarily mean better performance. The objective is to keep coil voltage stable under load throughout the acceleration phase, with little or no drop-off. It's necessary to notice that a coil's performance must be consistent from idle to the shift point or redline.
The internal structure of the coil is important for keeping consistent voltage throughout the RPM range. Coils with heavier gauge windings and more windings per coil effectively transfer energy throughout the engine's operating range.
Bigger Is Better -False
Buyers, even those with a basic knowledge of how an ignition coil is manufactured, may make an incorrect assumption in this area. A coil's performance is usually improved by adding more windings and using heavier gauge material for those windings. An improved coil may often fit into an OEM size case or housing, or one that is just slightly bigger, with those modifications.
With the right windings, stock size casings may frequently be enough. You may need to use a larger mold for the coil's body in certain cases, although this isn't always the case. The important thing is to use the right number of windings and the right gauge (size) material for those windings. Doing so on a regular basis ensures that the coil not only fits in OEM packaging but also performs much better.
Ballast Resistors Aren’t Needed With Aftermarket Coils -False
This last misunderstanding example will exclude modern coil over plug or coil pack ignition system cars and will instead focus on the older muscle car population; some of you reading this may not even know what a ballast resistor is.
In an electrical circuit, a ballast resistor controls the current flow. The ballast resistor controls current flow to the coil in an ignition system using a ballast resistor. When replacing an aftermarket coil or doing ignition system repairs, it's not uncommon for enthusiasts to throw out or disregard the ballast resistor.
The finest piece of recommendation for using a replacement coil with a ballast resistor is to follow the coil manufacturer's recommendations. When deciding whether or not to use a resistor, follow the recommendations provided by the coil vendor. If the coil needs a resistor and your previous coil did not, your new coil may easily burn out in a short time. On the other hand, if your new coil manufacturer does not want you to use a ballast resistor as you did with your previous coil, you may not be able to reap the performance benefits of your new coil.