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  #1  
Old 4 Weeks Ago
dtgriffi dtgriffi is offline
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Join Date: Nov 2011
Posts: 89
Question GPS Speed Error

My GPS speed has a +1 mph error. It registers zero when stopped, so it likely isn't an offset error, or it is but the display is incapable of showing -1 mph. It is +1 at all times and all speeds through 70 mph.
I have verified it against known good radar sources and another GPS device.

Has anyone seen this before? It has all updates since purchase in March. What effect if any would this have on location?
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  #2  
Old 4 Weeks Ago
GumbyDammit223 GumbyDammit223 is offline
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I don't think commercial GPS units claim better than a couple MPH accuracy anyway. I've always noticed a +/- couple MPH difference since Day 1.
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  #3  
Old 4 Weeks Ago
Bigdog9586 Bigdog9586 is offline
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I have 3 escorts and they all show 1 mph off from car and real gps.
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  #4  
Old 4 Weeks Ago
Whiskey Bravo Whiskey Bravo is offline
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Join Date: Jun 2019
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Default Gps

My new 360c is +1 all the time also.
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  #5  
Old 3 Weeks Ago
er95 er95 is offline
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+1
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  #6  
Old 3 Weeks Ago
ThomThom ThomThom is offline
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My Max 360 is spot on with the speedometers in both my 2004 Jeep Liberty Renegade and my 2014 Nissan Altima. My 9500ix is -1 mph with both vehicles.
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