I have a "08 XL 1200 Low. So far the only mod done was to put on Cycle Shack (MXLl-130 [2 1/2"]) slip on mufflers ( said to be almost equal to the old SE ll slip ons). They sound pretty good, but are a bit too loud. I checked with Big City Thunder to see if they have any baffle replacements and they said they have a baffle that goes into the end of the header pipe just before the muffler. What I'd like to know from sportster riders with EFI is has anyone with these mufflers or similar used the thunder monster baffles or any different / modified baffle. If so what did you use and how did it affect the bike. Thanks[/align]