poor fuel mileage

Discussion in 'Softail Models' started by jeff332008, Apr 19, 2010.

  1. jeff332008

    jeff332008 New Member

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    hi all, i have an 09 flstf, put on samson pipes, K&N stage 1, and a new powercommander v, yesterday the bike stalled out and code p0107 came up, as well i am only getting about 20mpg in town. Any suggestions would be awesome, thanks
     
  2. Hoople

    Hoople Account Removed

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    When installing PowerCommander maybe knocked a wire off map sensor. Error code is indicating no current flow in map wiring. That would explain poor gas mileage.
     
  3. jeff332008

    jeff332008 New Member

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    do you mean the wires coming out of the powercommander itself?
     
  4. Hoople

    Hoople Account Removed

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    No. The error code you have says "Map sensor Open or Low". There are 3 wires that go to the map sensor. (+5 reference, ground, Map output to ecm) The ECM is not seeing a voltage from the map sensor. It most likely is seeing zero and it wants to see something from .25 volts to 4.75 volts.

    I am thinking you may have a loose Map sensor (on throttle body) cable. It is an HD part & not part of PC. Of course it could be a bad Map sensor but since the bike is new and you added a PC I am thinking maybe a loose connection.

    I better back up and ask because I am not familiar with PowerCommanders. The PC is just a piggy back fueler that goes to the fuel injectors only, correct. You don't in any way remove the Map sensor or drive the map signal into the PC correct?

    I am thinking the map sensor is still intact & the way it came from factory.
     
    Last edited by a moderator: Apr 19, 2010
  5. jeff332008

    jeff332008 New Member

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    the pc plugs right into the ecm and controls fuel and ignition
     
  6. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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  7. Hoople

    Hoople Account Removed

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    I went to PC's web site to take a look. I see what you mean. I have no clue what the PowerCommander does with the map signal. I am sure someone that does will chime in.