Amazing product. I installed last night and was so impressed I took my wife in her car. She said it was like driving a completely different car! Thank you for making a great product! I have a 2012 Chevy Traverse and have experienced hesitation, declining power, dropping mpg, RPM fluctuations and rough shifting. At first I suspected spark plugs as the car started doing 100,000 miles. After changing the spark plugs, it still ran quite sluggishly and wobbled a bit at low revs when shifting gears. When you step on the gas pedal, the revs often met for a moment, then flattened out and began to pull. It feels like the gears are slipping! All this and no checking of engine codes!