ger said:
That is the error I had , I have the version 477 , when the dealer talked to Harley he said to make sure you click no on the do you have a 28t pully .
Plus he got some fix (he said) from them
I'm not sure what error you're referring to or what you're advising concerning the question the SERT Tuning Mode software asks.
When programming the ECM with a SERT tuning file the software will generate a prompt that asks: "Have you installed the Sreamin' Eagle 28-tooth sprocket?"
If you have a 28T front sprocket you answer "YES"
If you don't have a 28T front sprocket you answer "NO"
IOW, you only answer "NO" if you have a 26T (an aftermarket performance option) or 30T front sprocket. Actually, if you have a 26T front sprocket it doesn't matter what answer you choose to this question because the speedometer will be wrong either way. Here are the correction factors for the different front sprockets and how you answer the SERT ECM programming prompt:
_front________SERT___________speedo
sprocket_____prompt___________error
installed_____answer___________factor
__28_________YES____________0.000
__28__________NO________0.933 (-6.667%)
__30_________YES________1.071 (+7.143%)
__30__________NO____________0.000
__26_________YES________0.928 (-7.143%)
__26__________NO________0.867 (-13.33%)