Originally Posted by Brods
Do a little research and I think you'll find the 04.5 and up stock 4" exhaust is not all that restrictive. Unless you have to replace the exhaust because its rotting off, you can get a much bigger bang for the buck spending your money elsewhere. From what I've read, in order to have the "in cylinder egr" the turbo turbine has a small housing which causes quite the restriction. So spending big bucks on huge exhausts for extra performance without addressing that restriction at the turbo is kind of silly. Now if you want the sound or just need a huge pipe out the back to make up for other shortcummins.....
HAHA no I am not trying to make up for anything I just bought the truck 3 days ago and have been a hardcore chevy guy my entire life so this is my first dodge and cummins so I am learning about it all. when I get some time I will try to check out what all the issues are with those engines. But in the meantime its always nice to know what everyone else has already learned.