You can add one or the other without getting a fuel controller or remap from Vic. Neither alone will make a huge difference. The mufflers would certainly change the sound, so that's why I would do if I were you.
Unplug your O2 sensors, pick out your favorite muffler for sound and see how you like it.
You could yes, but you wont realise optimum power and rideability.
Also you risk burning exhaust valves at the very least if you gonna be getting on it hard and it has a lean mixture.
You can do it but.
No ones stopping you.
Hello All—thanking you in advance for the suggestions and advice. Just got a 2008 Victory Kingpin Tour-love it. If any of you are in the Hudson, Ohio area let me know as we have a small group of riders, but all good guys. Thanks, Brian
I'm Poppy from Jacksonville, FL. I recently bought a 2015 Gunner from Craigslist and would love to know what to check, change and upgrade because it hasn't been used for the last 2 years. I would also want to know where to buy parts.