jeez. Just kiss already.
Doesnt matter which way you put it, a equal length front pipe is the best sounding RB26. But if you go single then it sounds mental on its own.
Some say a equal length is beneficial to allow the gasses to flow evenly out to the tailpipe and inturn helps with shuffling. I can definitely say that a equal length front pipe helps with shuffling. My midori front pipe shuffled like a fair bit up inclines. But with the mines front pipe I do not experience the same level of shuffling.
But biggest point here is sound.
The end.
That is not the purpose of this topic and if you go and google I am sure you will find many more theories on the differences.