Flowmaster 40's -- Not Loud Enough

There will never be a consensus on what combo is best since the nature of people's opinion differences. I think my combo is the best sound you can get on a 4.6 but others disagree. One thing is for sure. Any offroad pipe will wake up those flows. Just don't get a BBK X :D

SLP does make a great X pipe but I don't like the sound of their lm mufflers.