PV4 from FuelMotoUSA on my 21 Fat Bob. Works great so far. No cam at this point but thats coming. Can't see why that would be an issue. The guys at FuelMoto have been awsome and i dont even live in the US.
I’ve used PV/FM for many years, works well, outstanding support. TTS is a great tuner as well. The thing about tuners is no matter how good the base tune is, it still has to be tuned for your bike. So, that being said it’s up to the individual to accept the base tune or fine tune it for his/her needs. One of the mods I like is to turn off the decel fuel cutoff. For me it is a smoother engine braking with less drag.