I just had 2.00" Rush Baloney cut muffler added to my 07 Softail Clasic. I am being told by the HD dealer that I don't need to do anything to the air such as a SE stage 1 nor do I need to have it tuned (flashed). I have read several places here and am being told by another HD dealer that I DO need to have more airflow into the engine and need to flash the EFI. This is my first bike and I only have 300 miles on it and would hate to have it setup wrong.
Im running the same rush slipons 1.75 baffles. dealer told me if I stay 2.00 and under dont need racetuner or A/C. 500 miles now pulled spark plugs and look great.
Bob
You will be fine just the way it is. I have the same bike and my dealer told me that I had to update the EFI and then he told me a few months later that I did not have to do the update if I would of left theS/E air alone. By then I already spent more money then I wanted to when I. Have fun with your new sound