My truck is not my daily driver and I neglected it for few year by letting it sit under the oak for months at the time.
But it is all stock with single upgrade FROM wicked wheel to newer one.
Not only the engine at 207k is bulletproof (not few sensors on it) but with better oil and higher tire pressure my mpg went up almost 30%.
I plan to drive the truck way above 500k, so I am staying away from tuners.