Not sure which 2007 Chevy HHR Power Programmers & Performance Tuners are right for you? We have over 5642 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I did some homework and decided this was the reprogrammer for me. AutoAnything had the best price so I took the plunge. Installed the program and am totally happy with the results. My "butt dyno" feels the difference. It won't peel the rubber off the tires but the performance change is there. MPG has gotten somewhat better too. All in all I'm a happy camper and would recommend this product." —William B from Huntington Beach, CA bought a Hypertech Max Energy Programmer for a 2007 Chevy HHR, 2.4L 4-cyl. engine.