i have a 2005 w micron slip on and stock air filter. The bike came with a PC3, i didt even know until later on. I was going to get a custom map done, until i called around a bit, and the places i found either did not do them, or the cheapest i found was 350 dollars! Things here in NYC are getting ridiculous. I checked that post of custom maps on here, but found nothing for just a slip on and stock everything else, and the maps on the powercommander website suck so i just threw on a zero map. Anyways, anybody ever use these guys? http://www.faic.cc/ 75 bucks is not bad given my situation....????