So I got me one of these dual systems off Ebay. Very simple pipes.
Knowing the V6 is a dog, I decided to use just one side and opted to do the right side. Here is the factory setup.
Here they are side-by-side
Now here is what I planned to do with the 2 into one muffler. 2 1/4" S-bends into Xlerator muffler with 2 1/2" outlet.
Since I cannot offset the muffler due to clearance issues, I decided to offset the right side pipe. I cut the one bend off and flipped it around. This allowed me to slip it back over the pipe and draw the tube to the right and then cleanly insert it into the muffler
Once I had it close I overlayed it to give you an idea of how it would route under the car compared to the factory exhaust. Of course it is routed out the right side of the car.
As you can see the 2 1/2" pipe is much larger than factory 2" crap.
I currently just have this run out the back end with a slash cut tip at the bumper. This is not too loud, sounds pretty good at WOT and the sound inside the car is not too bad. I am going to run it like this until I decide whether to put a muffler or some other termination on to quiet it down. Since some carbon buildup is natural over time and can tame it down all by itself I am going to wait.
First impressions, mid range power seems to be increased. I can actually feel it pushing me back into the seat on WOT accel.