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Mid Atlantic Impreza Club Forum sponsored by Annapolis Subaru |
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12-11-2007, 09:54 PM | #1 |
Scooby Specialist
Member#: 112719
Join Date: Apr 2006
Chapter/Region:
MAIC
Location: Merica
Vehicle:2014 Evolution X GSR 2006 TSX 6MT |
speedo problems? How do you check it? Looking for a “official” check
I think my speedo is messed up. It got me into some trouble the other day and either the cop screwed me royal or I am having an issue. Are there any shops that are board friendly who can “check” it out for me? The documentation is what I'm after, a 3mph discrepancy would put me perfect. Hit me up with a PM, I have some time to get this sorted out so… please help
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12-11-2007, 10:03 PM | #2 |
Scooby Specialist
Member#: 158025
Join Date: Aug 2007
Chapter/Region:
South East
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places with a dyno should be able to do it no problem.
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12-11-2007, 10:04 PM | #3 |
Scooby Guru
Member#: 21007
Join Date: Jul 2002
Chapter/Region:
NESIC
Location: North Shore, MA
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yes but i do believe they also have to be a state certified speedo calibration shop...
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12-11-2007, 10:08 PM | #4 |
Scooby Specialist
Member#: 116532
Join Date: Jun 2006
Chapter/Region:
MAIC
Location: Perryville, MD
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speaking of which..does kienans dad do that?
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12-11-2007, 10:13 PM | #5 |
Scooby Specialist
Member#: 112719
Join Date: Apr 2006
Chapter/Region:
MAIC
Location: Merica
Vehicle:2014 Evolution X GSR 2006 TSX 6MT |
I need whatever it takes for VA. I was in a 70mph zone, cruze control on 76, cop wrote me for 82 which= me f'ed. I didnt know that anything over 80 was such a big deal or I wouldnt have risked it. |
12-11-2007, 10:51 PM | #6 |
Scooby Specialist
Member#: 151079
Join Date: Jun 2007
Chapter/Region:
MAIC
Location: College Park, MD
Vehicle:2005 2.5RS RBP too many friction losses |
What about those GPS speed things?
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12-11-2007, 10:57 PM | #7 |
Scooby Newbie
Member#: 116331
Join Date: May 2006
Chapter/Region:
MAIC
Location: Alexandria, VA
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I've spent many days in many different rental Subies in which we've installed a rally odo/computer into to generate Jemba notes. Each car errored exagerating speed (going slower than speedo reading). Being low milage rentals, these were the factory equipped wheel and tires.
Why would a judge accept any speedo calibration error document when it is so easy to get whatever % of error you want (practically) by just swapping tire diameters? |
12-11-2007, 11:02 PM | #8 |
Scooby Specialist
Member#: 112719
Join Date: Apr 2006
Chapter/Region:
MAIC
Location: Merica
Vehicle:2014 Evolution X GSR 2006 TSX 6MT |
Its better than going down to court with just a (formerly) clean driving record. All the judge has to do is drop the mph by 2, or 3 to get to 79. Sigh, such a hassle for 12 over, especially when I wasn’t even going 12 over.
Virginia Defective Speedometer Defense Virginia is one of the few states where a defective speedometer is a defense if you have received a Virginia speeding ticket. You can check yours between the mile markers on an interstate. If you think it is defective have it repaired by a certified mechanic and present his statement to the court. However the judge has the authority to still find you guilty depending on the circumstances. The clerk of court may be able to tell you how he has ruled in similar cases. |
12-12-2007, 06:17 AM | #9 |
Scooby Specialist
Member#: 134943
Join Date: Dec 2006
Chapter/Region:
MAIC
Location: Oakton
Vehicle:94 SW2, 95 SW2 9(?) Lemons Car |
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12-12-2007, 12:39 PM | #10 |
Scooby Specialist
Member#: 112719
Join Date: Apr 2006
Chapter/Region:
MAIC
Location: Merica
Vehicle:2014 Evolution X GSR 2006 TSX 6MT |
I-85 going north near NC border. It does exist.
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12-12-2007, 12:49 PM | #11 | |
Scooby Specialist
Member#: 18642
Join Date: May 2002
Chapter/Region:
MAIC
Location: MAIC
Vehicle:2005 Impreza WRX STi |
Quote:
Time yourself over several miles at a steady speed and see if it matches your speedo. If you do 60, it's easy. One mile per minute. |
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12-12-2007, 01:13 PM | #12 |
Scooby Specialist
Member#: 104591
Join Date: Jan 2006
Chapter/Region:
MAIC
Location: Chambersburg, PA
Vehicle:06 STi WRB |
borrow a tactrix cable from someone, see what ecu reports
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12-12-2007, 02:00 PM | #13 |
Scooby Specialist
Member#: 37868
Join Date: Jun 2003
Chapter/Region:
MAIC
Location: NoVA: Haymarket
Vehicle:2010 Corvette Z06 Black |
Borrow a good GPS.
Mine STi reports 4-5 MPH "fast" compared to my garmin. |
12-13-2007, 12:55 AM | #14 |
Scooby Specialist
Member#: 88589
Join Date: Jun 2005
Location: Where the action is
Vehicle:2005 STI the best one |
Like meridock says, borrow a GPS. If you can get one that has WAAS capabilities it should be VERY accurate. My garmin PDA says it's certified to +/-.1mph. In my STi at 60 MPH speedo reading I am really doing ~55, and 80MPH speedo reading is really ~73mph.
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12-13-2007, 02:22 AM | #15 |
Scooby Guru
Member#: 36838
Join Date: May 2003
Chapter/Region:
MAIC
Location: Reston VA
Vehicle:2001 B50 RSTi Sedan 2011 DGM WRX hatch |
I used my GPS...
I'm off by 5mph at 65... Speedo reads 65, but I'm really doing 60... -- Dave |
12-14-2007, 06:47 PM | #16 |
Scooby Specialist
Member#: 112719
Join Date: Apr 2006
Chapter/Region:
MAIC
Location: Merica
Vehicle:2014 Evolution X GSR 2006 TSX 6MT |
Any other ideas on the paperwork?
Sigh, i hate living so close to VA |
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