I have a Muscle as well with VH slip ons. Honestly I purchased the Power Commander 5 for it but still havent installed it. The bike runs fine without any fuel tuner if you dont plan on changing the air intake. I'm still divided. I dont wanna dyno it. Maybe a map from FuelMoto is the fix. Others can chime in.I have a 2015 muscle, looking to buy a set of Vance and Hines slip on’s ( now out of production). If I find a pair, what sort of fuel management will I need and can I do it?