I have a 02 Electra glide carbureted. When its warmed up to running temp, it idles fine for a couple of minutes, the idle drops to around 500 rpms for a minute or until the engine dies. I change the CV to an Hsr 42 trying to stop this, but it seems to do it more often now. The bike has S&S 509 cams, quickie pushrods, 6200 rpm Screamin eagle ignition. It runs great down the road, and doesn't do it at every stoplight, but about every third time you stop it's gonna drop down and cut off. It acts like the timing suddenly retards. Could the MAP sensor be causing this? I have a friend with a 02 softail, Bone stock except for pipes, that does the same exact thing as mine. Any help would be GREATLY appreciated. I have checked for intake seals leaking and everything is fine there.