do you have to unplug the battery before installing aftermarket mufflers?

 

No, absolutely not.

 

they sometimes recommend disconnecting the battery whenever you work with electrical stuff.

not if you are just putting on bolt-ons like mufflers.

 

No worries, gotta have tunes for the install.

I meant the radio for some tunes sound wave, not a tuner.

 

a tune for the axle backs?

 

NO, you do not need a tune for an axel back exhaust because it doesnt change the airflow enough, and you wont notice a difference in power, just sound. And NO, you do not need to disconnect the battery befor you install it.

 

lol, ok i just wanted to make sure i understood you correctly.