Originally Posted by 79ta
I did a dpf delete, unplugged the egr(per the instructions with the smarty jr programmer) installed an amsoil by-pass filter system along with changing over to amsoil 15w40 diesel oil about 7 months ago. With 1900 miles on the oil, it looks as if I just poured it in, the power is unbelievable and I'm getting close to 20mpg. Also, I have a 4" mufflerless turbo back exhaust system that eliminated the cats as well.
Have you had any warrenty issues since doing this? I want to wait until my warrenty is up (2013) but hate the thought of having all that crap floating around in my engine's lubrication system.