wanting

Exactly what does a power commander do? I have Leo Vince with baffles and no CAT, kn air filter but no pop on decel or anything. Does it do kinda what you tell it to do as far as if you're wanting more performance or better mpg or more get up and go?

Looking into finally biting the bullet and getting an aftermarket exhaust I can't really find much info on what actually comes with the different brands I've been looking at either the two brothers or Leo Vince just wanting to know if the all come with the same package eg db killers, fender...

Looking to see if anyone has one they are wanting to get rid of. Thanks