I am just curious, I am a long time Suzuki owner and typically you do not have to reprogram or buy a power commander if you are just changing your exhaust. With the Suzuki's it is not necessary until you change your intake and air filter. This always made sense to me because you are not letting any more air in. So is it necessary to do this on a 08 Victory Vegas Low or will the O2 sensors compensate for it? If it matters I am installing a set of Arlen Ness Slashness.