Hi guys thanks for letting me join. I bought a 2015 limited edition back in early October with 50k miles .was only able to drive it 2 days before I had to take it back to the stealership for the dog count down. They say it needs $7000 worth of repairs but can’t get the parts. Will be covered by them at least. Will be using the truck to tow my 25 foot travel trailer. What tune do you suggest?