I have a 2001 HD Road King. What are the pros & cons on 2 into 1exhaust , compaired to True Dual Exhaust? Does it increase torque, horse power?? Experienced replies encouraged.

i have a 01 road king. it has the factory dual exhaust. i am trying get the bike to sound louder. it has aftermarket mufflers now that are louder than stock but do not give the sound i would like. it seems that the bikes that do not have the dual exhaust are louder and actually sound better. of course the exact type of mufflers make a big difference, but i am refering to aftermarket stuff not stock. so is there any recommendations on a muffler type that would really boost my sound. also what if i was to change my pipes to both exit on the right side instead of duals. would that help or is it just my imagination that those systems are louder.

would like to know which harley davidson exhaust is louder and has a better performance on a roadking with true dual exhaust,between rinehart true duals,or thunder header exhaust systems. tkx ez.