My 06 is stock with the exception of whats listed below. My truck has 75,000 miles on it. I have been thinking about getting more HP and fuel economy out of it. I was looking at a smarty jr and a banks economind. I am open to other brands, just looking for a quality tuner. Am I safer to just leave it alone? Will this create more problems, injectors, etc. I am not looking to turn this into a race car. I use the truck for towing and general transportation. Thanks in advance for your thoughts.