Most vehicles manufactured in the last decade or so feature rewriteable electronic control units, which govern most of the inner workings of the vehicle. This is particularly useful when tuning. Instead of having to get under your hood with wrenches and hammers, you can simply program your car to be more powerful. That was the idea behind Hypertech Power Programmers. When cars come out of the factory, they are programmed with instructions that strive to compromise performance and economy. However, some drivers need - or at least want - more from their engines, and Hypertech understands this. These power programmers are quick and easy ways to get immediate power gains from your engine. Simply plug the Hypertech Power Programmer into your vehicle's diagnostic port and answer the questions it asks you. When you finish answering all of the questions, the Hypertech Power Programmer will then rewrite the software in your electronic control unit, commanding it to get more power out of your engine. Conveniently, if you ever need to return your vehicle's settings to factory levels, you can also undo all of the programming and reset the electronic control unit to default levels. Tuning your vehicle for performance could not be any easier. Motor enthusiasts should certainly get courteous sales support while buying good quality automotive parts. That's why we created an always-open sales assistance call desk to address your queries. To sweeten the deal, your parts come with free shipping for every order at least $50. If you spot a better price somewhere else, tell us - we always beat any advertised price for auto parts.