This may give you some help on the installation to see it actually done.
The TFI is a fuel controlling device used on fuel injected bikes that lets you tune the amount of fuel delivery in different areas much the same as jetting a carb model does.
It does so by altering the pulse width of the fuel injectors. In other words it keeps them open longer which is accomplished with the potentiometer adjusters in the unit.
There are four of them which you use a small screwdriver to adjust.
It is a plug and play unit and very easy to install and adjust.

http://www.dobeckperformance.com/video/georgeisode.asf

Or for a flash version click on this link below, found on the home page .

3D Flash Installation Instructions for Harley Davidson EFI. (http://www.techlusion.com/whatsnew/whatsnew_view.asp?cid=21)

Techlusion Tech Support..877-764-3337 (George) Great guy to talk to.

Techlusion home page.
http://www.techlusion.com/ (http://www.techlusion.com/)