I hope I can get another opinion and gain some knowledge from you guys. I was pondering a Screaming Eagle EFI Race Tuner Kit for my 2000 road king, but suddenly realized I had no idea how those things work. Would one of you guys enlighten me? I also realized that I had no clue regarding what a TV II and III is. I hope I wrote it correctly the Terminal Velocity from Terry’s Components, how does this one work. Finally, while reading the self help tips I saw what was called a digital tech, referred to in a thread on EFI idle adjustment, as usual I don’t know what that is either. Can you help?