Carb I recently purchased a 2006 Dyna FXDBI Street Bob after reading the September 2005 issue of American Iron Magazine (which featured the bike on the front cover). It's my first new Harley, and I’m extremely pleased with my purchase. I added the Screamin’ Eagle slip-on mufflers and an aftermarket high-flow air filter, but I'm confused about the whole issue of EFI mapping when making such changes. The dealer, as well as the Harley parts catalog, claims that when installing a high-flow filter, I need to have the dealer-installed mapping to compensate for these new parts. However, in your September issue, the article states that because the FXDBI has oxygen sensors in the head pipes, mapping changes aren't needed. The whole idea of the sensors is to constantly monitor what's coming out of the exhaust and change the fuel/air mixture, isn’t it? Also, while at the dealership on an unrelated visit, I overheard the service manager complain to a service tech that there were no maps yet available for some of the 2006 models. I understand rejetting a carb, but what’s the answer for the new EFI with oxygen sensors?