We bought a 2010 Enclave CXL from a friend and fell in love immediately. Three months later it was totaled by by someone plowing into us from the rear. So we bought another 2010, also a CXL. We noticed a big difference between the two of them in performance. The first one was not very peppy and didn't seem to have much power. I knew being a bigger SUV with a 6-cyl in it was probably the reason. Well this second on will turn the tires with no problem and will scat down the road. I'm very pleased with this one's performance. I'm wondering what kind of performance some of you get in your Enclaves. Is there a performance chip you can install to make a difference? We live 10 miles outside of town. So most of our driving is highway. We're getting 18mpg. I'm interested in hearing from some of you and learning a little more about my car. Thanks!