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My last three tests were all 26.2 and above. Different road types and different weather conditions. The last one was in very heavy rain. The tests were mostly highway and interstate. I am a conservative driver and very soft on the pedal. Before I bought the truck I went over dozens of reviews...

Had mine done a week and half ago. I keep reading the bad experiences posted here and I just am not having that problem. Are there any changes? The first day on the way home from the AEM I noticed engine speed and transmission shift changes but my mileage had not changed. On two test runs...

I did not notice any loss. On the way home from the AEM the truck display indicated 27.2 mpg. That was only a 15 mile trip. A few days later I did an out and back trip that was about 45 miles total and the truck displayed 26.2 mpg.

Did another mpg test today. 2015 Laramie crew cab A/T tires, AC on. Total distance about 45 miles with 2/3 being interstate. Rolling hills with little level terrain. Some stop sign and stop lights. End of trip truck indicated 26.2 mpg. Did not notice transmission shift change difference...

Had the AEM done last Wednesday. Definitely notice a change in shift patterns and engine speed not to my liking. The drive home was only about 15 miles and was a combination of town, interstate and country highway. I don't drive fast but I don't slow traffic either. Got home and the computer...

Hi folks I bought a 2015 Laramie crew cab a few months ago after a neighbor's tree took out my 2004 2500 4wd with the Cummins. The truck was in great shape when I bought it with about 28,000 miles. I plan to start pulling a very small fifth wheel with the truck in a few months so...