If you want big power in a small package, then you will want a CTS power programmer. This tiny object will allow you to tune your engine to make it more powerful or more economic. Also change the shift points with this CTS power programmer. All of our CTS power programmers are perfect as a way to make your car more fun. Changing the tune of the engine is easy because all you have to do is plug the CTS DiabloSport power programmer into your ALDL port under the dashboard. This CTS power programmer will also allow you to adjust when the engine hits the redline and allow you to disable that pesky check engine light.