Well then, let's get a bit more precise in diagnosing the "issue". We need more information, more is good, too little is not enough.
Dowop says that the exhaust is "stronger"... on one side.
Clarify that statement please:
Is it louder?
Is it popping more (on decel or idle)?
Is it smoking?
Does the pressure when you put your hand over the ends of each pipe feel the same?
Is it the same pressure when you totally plug one end with your hand?Is the color the same on both headers? (sorry if there is previous discussion on blueing (izzat that spelled write?)

, lots of that going around, too hard to keep track)
"Stronger", please definne in as many ways as possible.
Not busting on ya, really, give us as much info as you can dowop (are you Italian??, ohh, bad Pat, bad) to the actual problem you feel you are having.