Why are Performance Programmers, Tuners and Modules so popular? The main reason is obvious – they provide quick, reliable and easy access to increased horsepower and torque. Adding other upgrades like intakes, throttle body spacers and exhausts requires aftermarket tuning to get your car running it’s very best. And sometimes you just want the ability to smoke your tires if you feel like it! Once you’re done burning rubber, most performance chips also provide their users with another substantial benefit, improved fuel mileage.