Super Gizmonic Transtabulator
If you put bigger tires on your late-model truck and didn’t recalibrate the speedo, then you’re probably running out of excuses to tell the cops. The Tru Speed Speed Signal Calibrator from Superlift allows you to easily recalibrate the speedometer of most ’92-and-up computer-controlled trucks. The unit installs with a simple four-wire hookup and is easily calibrated by using the supplied chart, as long as you know your vehicle’s original tire size and current tire size. If you don’t know your current tire size, you probably shouldn’t be driving anyway. Information: Superlift, 318/322-3458, 800/551-4955 (tech), www.superlift.com.