After reading everythig and the replys I have recived. I am going with a Smarty Jr & a DPF Delete pipe. Do I need to replace the down pipe? What if anything doI need to purchase? I was looking at a fooler (sims) but I want set it forget it system.
Why is there two Smarty Jr? One without delets one with delets. Why own one and not delete?

 

The sticky at the top of this forum will answer all your questions. In short, you do not need the down pipe unless you want to eliminate the first cat. No sims required either. It's my understanding that a Smarty Jr with ME programming plus a DPF delete pipe without bungs is the cheapest delete solution, if you can find them.

 

I called Rollin Smoke Diesel and got all the answere taken care of.

 

Let us know what you end up with and how you like it.