I have a 2018 Colorado short bed and am very impressed with mileage and performance. My concern is we are planning to buy a tow behind toyhauler, about 28 foot and will do some winter travel/camping. I pulled a trailer that weighed 6000 pounds and, although the truck pulled it okay, I know the engine and tranny were being overworked. I could hold my on on steep grades but couldn't accelerate. I would like to boost the power/torque somehow but don't want to void my factory warrenty as I only have about 33,000 miles on it (two trips cross country). Any suggestions would be most appreciated.