1: YES, was one ofthe first things I did
2. NO ( still original TPS on 2005 model)
3 Yes ( with tuneboy I clickedon it but not actualy touched them except once, it started acting up, was really hot( 109+ outside), and the TPS was caked with goop from a long ride, so I cleaned it, removed and reinstalled it, and worked fine afterwords) I think they act squirrly when hot and dirty
4. over 20,000 on the bike so at least 15,000 with stock TPS and secondaries removed