Spark plugs can make or break your car’s engine power, especially when it comes to power adders. There are several factors to consider to make sure you have the best horse-power gain after you supercharge your vehicle.
Heat range is one of the most common things you can (and should) change when you add boost. The heat range is the spark plug’s ability to pull heat out of the chamber or away from the tip. Pulling that heat away means less chance for detonation. However, a little bit colder is good. A lot colder is bad.
Gap is another key consideration. Adding boost adds cylinder pres-sure inside the combustion chamber. When that spark has to jump the gap, it now has to do so amidst all that extra pressure. To ensure that a spark fires properly every time, you must close down the gap, making it easier for the spark to jump from the…
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