To my factory exhaust!! This weekend I will be installing MBPR downpipe, 5" flo pro exhaust, AFE intake and Spartan tunes! I am so excited I can hardly work!! I have a muffler and a delete pipe. I just need to decide which way I want to try it first. I have been waiting on this day since I bought the truck in October of last year. Just wanted to get some miles on it before I tuned to make sure I wasnt going to have a lot of problems. I have a Ford Lightning with ever bolt on you can do that puts down 490hp and 580tq. I hope the 250 will give it a run for its money after all the mods! Just wanted to share in my excitement!