I have an 2008 dyna with bigshots, high five and a gen III TFI. I used the stage 1 settings in the instructions for the TFI. At a steady cruise 2000-2500 rpm I get some serging and you can here the exhast crackling unevenly. Tryed more fuel with the TFI and it did not seem to help. It runs smooth when you get the RPMS close to and over 3000. It runs strong in all the other areas. It is most notacable cruising the street at 30-40 mph. Any thoughts on this? The thing runs great and the setup made a very notacable differance in power and acceleration. I just need to get this part figured out.