I have a Banks Power Pack system on my 1999 Dodge. When I had the system put on my truck, I did not know anything about TDR or that much about diesel engines for that matter. I have read alot of peoples likes and dislikes about Banks Products on the web site since I've joined in July of this year. My opinion about Banks products is that maybe they are a little expensive, but they are very well engineered and very reliable. Granted there are alot of ways to increase the power that the Cummins engine can produce. You need to ask yourself "How much power is enough?" There are minor modifications you can do all the way to major modifications. The Banks kit I have gives me an Increse in power that allows me to do what ever I want to with my truck. I could go out and spend more money and get more power, but for what I use my truck for, I dont need to. If you want to be able to smoke the tires through every intersection in your town then you might want some bigger modifications than a Banks kit. I consider my truck to be a significant investment that needs to last a long time. I'm happy with the way my truck performs. I remember how guttless it was before the Banks kit. The day I had the kit installed and drove home, it felt like the truck woke up from a long nap. The choice is yours. How much power and reliability do you want?. More power = shorter engine life. With the added power the engine is putting out, I change the oil alot more frequently than I did before the kit was installed. Thats my two cents on the matter. Knowing what I know now about other ways of improving the power from my truck, I still would probably spend the extra money for the reliability and piece of mind.