1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2006 reprogaming mileage reduction

Discussion in 'Gen 2 Prius Fuel Economy' started by flynlow, Jun 2, 2006.

  1. flynlow

    flynlow Junior Member

    Joined:
    Apr 13, 2006
    24
    1
    0
    Anyone have their 2006 hooked up to a Toyota scantool for programming (for any reason) and notice a 3-5 mpg reduction?
     
    #1 flynlow, Jun 2, 2006
  2. hobbit

    hobbit Senior Member

    Joined:
    Mar 23, 2005
    4,089
    468
    0
    Location:
    Bahstahn
    Vehicle:
    2004 Prius
    Model:
    N/A
    If the ECUs lose power for whatever reason, or get reinitialized,
    then the engine controller has to re-learn a bunch of parameters.
    In the meantime, it runs from the default fuel maps which are
    probably not optimized for your particular engine and driving style.
    So give it a few days and a few full thermal cycles / trips...
    .
    _H*
     
    #2 hobbit, Jun 2, 2006
  3. flynlow

    flynlow Junior Member

    Joined:
    Apr 13, 2006
    24
    1
    0
    This happened 800+ miles ago..
     
    #3 flynlow, Jun 2, 2006
  4. badaka

    badaka New Member

    Joined:
    Jan 8, 2006
    47
    0
    0
    Location:
    Boston, MA
    Vehicle:
    2006 Prius
    Maybe yours is a slow learner. :unsure:
     
    #4 badaka, Jun 3, 2006
  5. jburns

    jburns Senior Senior Member

    Joined:
    Oct 13, 2005
    829
    111
    0
    Location:
    Archdale, NC
    Vehicle:
    2010 Prius
    Model:
    III
    <div class='quotetop'>QUOTE(badaka @ Jun 3 2006, 07:50 PM) [snapback]265322[/snapback]</div>
    He shouldn't worry. I've heard the government is about to announce a No Prius Left Behind program so remediation should be available. :p
     
    #5 jburns, Jun 3, 2006
  6. hdrygas

    hdrygas New Member

    Joined:
    May 22, 2004
    3,650
    6
    0
    Location:
    Olympia Wa
    Vehicle:
    2004 Prius
    Does more than one person drive the car? That can confuse the leaning curve. When I had my ECU reprogrammed I had a hit for at least a tank, that is 500 mi plus.
     
    #6 hdrygas, Jun 3, 2006
  7. flynlow

    flynlow Junior Member

    Joined:
    Apr 13, 2006
    24
    1
    0
     
    #7 flynlow, Jun 4, 2006
  8. galaxee

    galaxee mostly benevolent

    Joined:
    Mar 14, 2005
    9,810
    465
    0
    Location:
    MD
    Vehicle:
    2005 Prius
    what kind of programming did they do?
     
    #8 galaxee, Jun 4, 2006
  9. flynlow

    flynlow Junior Member

    Joined:
    Apr 13, 2006
    24
    1
    0
    <div class='quotetop'>QUOTE(hdrygas @ Jun 3 2006, 07:17 PM) [snapback]265370[/snapback]</div>
    I noticed you have a 2004, I am seeking experiences with 2006.
     
    #9 flynlow, Jun 4, 2006
(You must log in or sign up to post here.)