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Speedometer problems

Discussion in '2nd Gen. Tacomas (2005-2015)' started by brandonlamb25, Dec 5, 2010.

  1. Dec 5, 2010 at 1:41 PM
    #1
    brandonlamb25

    #1
    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    351
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    Ok, a few years ago I lifted my truck and put on 285/75r16 tires. No problem. I ordered a hypertech inline speedometer calibrator. Again, no problem. Has worked great for years. Yesterday I regeared from 3.73 to 4.10. I then noticed the speedo was off due to different gears. So I removed it and reflashed it with the following info.: old tire size 245/75/16 new tire size 285/75/16 old gear ratio 3.73:1 new gear ratio 4.10:1. Then I reinstalled. Took a test run. Speedo is now off according to two gps units. When gps shows 80 speedo say 72. Any idea why it's off?? Thanks
     
    brandonlamb25, Dec 5, 2010
    #1
  2. Dec 5, 2010 at 4:14 PM
    #2
    brandonlamb25

    #2
    brandonlamb25 [OP] Well-Known Member

    Joined:
    May 25, 2008
    Member:
    #6871
    Messages:
    351
    Gender:
    Male
    Georgia
    Vehicle:
    08 Crewcab Prerunner V6
    K&N Intake, Wet Okole Seat Covers, Ipod to Factory radio hookup kit, Black Low Pro Toolbox, Toytec Coilovers and 285/75r16 BFG MT's
    anybody got an ideas as to why im having this problem??
     
    brandonlamb25, Dec 5, 2010
    #2

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