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Discussion Starter · #1 · (Edited)
Took the bike in tonight and had them download Stage 1. Service did not want to do the air filter upgrade in the event the download did not solve the problem and felt it may make it more difficult to diagnose.

Rode the bike home, stopping maybe ten times for stop signs and stoplights. At one stop, the bike did the stumble that I have previously posted. On another, the bike actually quit going through a intersection. The third time the bike back-fired... so much for this download as a remedy. Looks like the download made it worse; the good news is that means it should act up more readily for the service manager.

Called service back; I was asked to not ride the bike over the weekend and bring it in Wednesday. Will post any updates after that...
 

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Discussion Starter · #2 · (Edited)
July 31 Update:

Good News:
Service manager has ridden bike and confirmed the stumble problem, agrees that it is a concern and says this is not normal. Said he did get some kind of trouble code...

Bad News: Neither he nor H-D tech support have a clue on why the bike is doing this. Checking with Tech support again today.

Went by this evening and he had a laptop computer hooked up and a fuel pressure gauge; he hopes to ride it tomorrow and see what he can find. So far, everything appears 'normal' but he knows that is not the case.
 
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