Just bought 2008 Heritage Softail w/1800 mi. It had V&H Big Shot Staggered on it, and what I can gather from the Stage 1 posts in this forum, I believe it has had the Stage1 stuff added. At least I can match the air filter and backing plate part numbers on the bike to those posted here. The problem I have is after the engine has warmed up and I come to a stop light, the idle goes from real smooth to getting kind of rough then to just a pop/pop/pop like it's only firing on one cylinder. When I goose it, it gets smooth again and then goes back to the popping. My gut tells me that it's to rich but before I go changing fuel MAPS I thought I would get some different opinions. BTW - this is a great sight ..... I have learned lots already. This is my first Harley. Way different from my Triumph.