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Fernus
Posted on Friday, September 07, 2018 - 03:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey guys, I got my Uly in April and have done some tuning to try to fix some of the sputter and stall issues. Ended up getting Buelltooth and applied a map they provided for k&n and stock exhaust. It runs better but often when I cold start it. It sounds like the exhaust valve is toggling on and off and then it starts to run bad. Kinda like a hickup that sounds like a tiny sneeze. Then the Rpms fluctuate and then either stableizes or stalls . After that it runs ok. Any ideas?
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Teeps
Posted on Friday, September 07, 2018 - 03:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Assuming the bike is a '06 or '07, and there no other underlying issues.

Bring the engine to operating temperature.
Then set the TPS value to zero.
Start the engine; adjust idle speed to 1050~1100 RPM and no higher.

How the engine runs at cold start is what it it is...

'08 or later I got nothing for you.
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Fernus
Posted on Monday, September 10, 2018 - 05:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yeah it's an 08.
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Shoggin
Posted on Monday, September 10, 2018 - 11:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Then it's a completely different system than the '07 and under bikes.

Your DDFI-3 ECM uses a Idle Air Control valve to set idle speed, not a knob.
The same ECMDroid program you used to install the fuel map with the "Buelltooth" bluetooth communication link has a ton of diagnostic info.

Go to "Live Data" and see what the IAC is doing.
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Shoggin
Posted on Monday, September 10, 2018 - 11:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You should have re-set the TPS after messing with the fuel maps. Did you?
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Fernus
Posted on Friday, September 14, 2018 - 10:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks guys, I had done the tps reset a few months ago but was not instructed to do so after changing the maps. I gave it a try this morning. Dunno if it fixed it yet. If not I'll try checking the IAC.

I'll let you know. Thanks
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Fernus
Posted on Sunday, September 16, 2018 - 01:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Shoggin! that did it. No more little girl sneezes. It's still actuating the muffler valve on and off during cold start. I had removed a check mark from on only at WOT. Maybe I'll put it back and observe.
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Shoggin
Posted on Sunday, September 16, 2018 - 06:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glad it worked out for ya, Now go for a ride!
: )
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