There is more to these trucks than blowing black smoke. Unfortunately the guys who have enjoyed running down the street rollin coal are going to ruin it for everyone here in the near future, in all actuality it has started with the new Diesels on the market.. Like previous posts have said, do some research and find the most reliable parts to put on your truck. I would first start of with some gauges, then intake and exhaust, and a chip can be thrown in at that time. Yes it is fun if u have to get on it and blow some black smoke, but these trucks are defintiely a lot more than that. good luck with whatever direction u wanna go.