Chevy Astro Speedometer Calibrators

Speedometer Calibrator by Hypertech®. The law requires accurate speedometer readings, even if you have non-stock tires or gear ratios installed. The Speedometer Calibrator is created to provide that specific function if your Max Energy...

Max Energy™ Programmer by Hypertech®. The Max Energy Programmer is one of the most full-function tuners on the market - providing high levels of power and economy for gasoline and diesel engines, with specific tuning applications...

Performance Programmer by JET®. The JET Performance Programmer lets you take control and program your own vehicle computer to match your driving style. The programmer simply plugs into the vehicle's diagnostic port under the dash and...

Speedometer Calibrator by Hypertech®. The law requires accurate speedometer readings, even if you have non-stock tires or gear ratios installed. The Speedometer Calibrator is created to provide that specific function if your Max Energy...

Max Energy™ Programmer (32500) by Hypertech®. Premium Octane: +13HP +27TQ. The Max Energy Power Programmer installs Hypertech's custom developed tuning which adds maximum power and performance for any kind of driving! Max Energy...