One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...

With an ignition and electrical system analyzer, timing light and vacuum gauge—such as these Penske units from Sears, Roebuck and Company—normal tuning, troubleshooting and a number of not-so-normal ...

Tracking critical engine data is essential for optimizing performance and ensuring the longevity of your vehicle. Aftermarket gauges provide a reliable way to monitor various aspects of your engine’s ...