Might want to closely check that harness under your tank , we some times clip the zip ties on harnesses at work. They have a machine that zips them so tight they sometimes wear through the the wire insulation and cause intermittent problems. Just wrap some electricians tape an inch or so down from where the zip tie was and inspect the wire's at the spot of the zip tie.

 

sounds like your idle is similar to mine, not smooth drops down then bike dies, no engine codes. I checked connections over and over for months. put bike away for winter does the same thing in the spring. I pull the cam chest appart and find 2 rollers starting to pit up on the lifters. maybe even the roller bearings failing but didnt feel stickey by hand, under load who knows. so i put in 4 new lifters new set of cams only because the 255 cam with my 10.5;1 compression is way too high using those cams ccp about 212 range. cleared the problem right up. no ideas if a lifter wasnt pumping up or the roller wheel was sticking once and awhile. it just kept stalling almost every time I stopped at a light.

 

Are you talking about the cables in the cable tray under the tank?

 

Could bad gas or water in the tank be a possibility? Just trying to think of other things that might cause these symptoms.

 

Your tuner is NOT the problem. TTS and PV are both flash tuners just like harley uses. I would check all the electrical connectors and grounds, especially around the throttle body. Sounds like an idle air problem? Could even be Evaporative purge valve? Good Luck! These things are crazy to find sometimes...

 

A lifter did bleed down once about 500 miles ago. I can't see this being my issue with so little miles on the bike....

 

Is there a way to test this theory? Certainly is possible...

 

Where is the Evaporative purge valve?

 

You could drain all gas from the tank into a clear container and see if water sinks to the bottom.

 

I know I run in to this issue with my boat on a semi regular basis at the start of each year. I can drain my water separator filter and see the water in a glass dish though. And the symptoms you describe are very similar to my boat. Very strange idle at times and the RPM surges when under power.