Getting Results with a Spark Plug Indexer
If you're looking to squeeze every bit of power out of your engine, using a spark plug indexer might be one of the smartest (and cheapest) moves you can make. It's one of those old-school racing secrets that's often overlooked by folks who just swap out parts and hope for the best. While modern engines are incredibly efficient right off the factory floor, there's always a little bit of performance left on the table if you're willing to get your hands dirty and focus on the tiny details. ...