I have an 06 Softail Std EFI. Over the last couple of rides to work, I have started to get a hiccup at cruising speeds. I am going to add a TFI(need to save just a little more) will this help or could this be that I need new plugs. Stage one was done before I bought it. Thank for the help that I know that I am going to get. You guys and gals are great.