I just hot an 11 ultra. I have the seven year warranty on it and I really don't want to do anything to jepardise that coverage. I want some slip ons and a fueler like the tfi I had in my road king but I know Harley kind of frowns on that. I don't want a warrany claim turned down because of some stupid technacality. My question is what exactly does the stage one download do? I know its a rip off but I just want to comply with the esp warrany. Does the download increase fuel enrichment? I thought I had heard that it mostly takes out timing which dosent make a lot if sense to me.