Welcome Jeff. You don't NEED gauges on a stock truck but they are nice to have. It also makes it a lot easier to spot problems like boost going down or transmission getting too hot and just seeing how your truck is running. Boost gauge is nice to get the best mileage if you are so inclined. You can do that by keeping the boost as low as possible while maintaining your speed. Enjoy your new truck, most don't have problems. TDR is kind of like reading a medical book, pretty soon you worry about all the things that can go wrong with you.