[dirtyduckdavis]

It all depends on what you really want. In my personal opiion the titans stock sized pipes are ideal for what the titan like with back pressure flow etc. What I did was ordered a 2 in 1 out magnaflow muffler and a tip 3" stainless 10inch long tip and I am going to weld on. I believe Magnaflow does sell 2in 2 out as well. I at first wanted a dual but heard from the knowledgeable people in this community that you could loose some low end power. Its up to you!