i have a 2003 ctd and i don't have a cat. converter. if i just cut off the muffler and weld in a more free flowing one (mbrp) will it be any louder or do i need to do the full turbo back exhaust system?[sm=dontgetit.gif]

 

Having a cat along with a muffler will definately make it quieter. I left the cat on mine b/c other guys cut it off and said that it got obnoxiously loud, but it really depends on your taste. I went with the Aero Turbine and the tip and I love it. Guys here have many different exhaust systems, but it's really up to you, but choose wisely, you can blow some money quick, and then all over again if you don't like it.