I want to change the stock California mufflers (which have Catylitic converters) with Screaming Eagle slip-ons. The problem is the parts book states they are not available for the FXDSE, not even the 49 state model. Is that becaause they all have cats in them for the 2007 model? Are the mounting brackets different? I would like to put on something not too loud and re-map the fuel injection to burn a little richer. I was told by the dealer that a Power Commander is not as good as the Race Tuner made by Harley. They told me that the Power Commander does not due mapping at idle. Of coures that is what the dealer says.