RE: V & H Big Shots Long
I was told by my dealer, the performance race guy, that if you install the stage1 kit you get a Screaming Eagle Air Cleaner and Screaming Eagle 11 mufflers. This just requires a download for EFI engines.
Now if you want to switch out pipes to something other that SE you must use a fuel management system ie; dyna jet power commander, race tuner or fuel pack (for V&H pipes only). The race tuner is big bucks like $500 it allows a much more variable fuel mapping and is good for folks who intend to add lots of modifications later. Such as cams, heads, larger bore, stroke, etc.
If you intend to just do a stage1 and use V&H pipes you can save some money and buy V&H's fuel pak for about $220 and set it yourself. It has their fuel mapps for their pipes and most of the bike models. I understand you can download more from the internet as they add more mapps. But if you decide to change something later you might have to buy another EFI tuner like the PC or Race Tuner.
This unit piggybacks on the EFI computer.
The dyna jet Power Commander is the same company that makes all the Dynos that the dealers use so its cost is in the middle, about $330-350 and it piggy backs on your EFI and can be set by the dealer or by you on your laptop or with the buttons on the front. It can be used for any level of engine performance but doesn't have as much flexibility as the Race Tuner.
The dealer Race Tuner, I understand does not piggyback on your EFI so they claim that its less likely to be a problem if something breaks. Don't know if that makes any sense or not.
If you are handy you can go with either the PC or the Fuel Pak and install them yourself, at considerably less money. You may not get the complete HP and TQ curve out of the bike that Harley will give you with the dealer installed dyno tune Race Tuner, but that will cost you close to $1500 if they do all the installation and two dyno runs.
So its a big decision and maybe your budget will dictate the direction you have to go. Unlimited pocketbook let the dealer do the job. If money must be budgeted then the fuel pak would be the cheapist way to go.
Our dealer has a service forum in Portland Oregon. Latus Motors, service, ask mike. He is a gifted racer and can answer any questions at any level of performance that you want to choose.
I hope this is helpful.