I was out with a friend yesterday. He was on his 2003 FI Heritage and his bike started to sputter. The bike has a PC5 , Andrews 21 cams. It has been running fine. He did make it home under his own power. He was a little low on fues so on the wau=y home I had him fill his tank to eliminate the in tank line issue. We changed the plugs, they weren't too bad. Checked the charging system- ok. Checked all the battery and cpu connections.

Just looking for some advice on the next place to look

 

Intermittent crapping out will probably be electrical .
Check your battery terminalks is/are not loose maybe.
It's probably a connection somewhere.

 

Found the issue. The shaft the butterfly mounts to in the throttle body is broke, seems like this was a know issue on 88 inch twin cams

 

There you go ,haven't heard of that one.