When checking to see which part number is the proper unit for my 07 fxstc, the power commander website say it's 15-004, however some ads on eBay and othe websites are saying it's for 09-11, while other say 07-11.
What is the difference?, and did some softails use a different programmer?

 

Yeah, some of the other softails still used the PCIII, and not the PCV. However, I'd trust their website over ebay and go with 15-004.

Of course, knowing what i know now, what you should do is go to FuelMoto's site and look at the PCV they offer there. Essentialy the same thing, just rebranded, but also costs less.

http://www.fuelmotousa.com/harley/ef...tuner_type=106

 

PCV's work on all harley with the Delphi system even your softail.

Check Powercommander.com and you'll see the listing for your bike. PC3 has been discontinued so you are seeing old stock being sold.

 

What I'm saying is when I search the net for PC V 15-004, some listings says it is for 07-11, while others say 09-11?. Even fuel Moto lists one for 07-08, and a seperate one for 09-11

 

It's a simple thing to ask Dynojet to get the best answer. Check Powercommander.com, and you'll find out. Also, you may want to research a bit more, (I've gone through it) and talk to Fuelmoto about your particular needs. They do have their own version, but moreover, they know what they are doing, not just know what to sell. You'll better be served by talking to them.