Understanding Spark Plug Heat Range One of the most misunderstood aspects of spark plugs – is the heat range. One misconception is that the heat range is related to the spark temperature or intensity. Another common misconception is that the spark plug…

The five things you should know about spark plugs include information on anti-seize, corona stain, gapping fine wire, torque and copper spark plugs.

HOW DO I “READ” A SPARK PLUG? Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall…

Replacing worn or failed oxygen sensors is the best way to protect expensive three-way catalysts or catalytic converters. Learn more...

What does gapping and indexing mean for you? Check out this article to learn more about spark plug gap tolerances and indexing for race applications.