Getting more power with index washers for spark plugs
If you're hunting for extra horsepower, index washers for spark plugs are a cheap and effective tool to keep in your toolbox. Most people just screw their plugs in and call it a day, but if you're building a high-performance engine or just want the cleanest burn possible, you have to care about where that spark is actually pointing. It's a small detail that can make a surprising difference in how your car runs, especially when you're pushing the limits. ...