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GPS test

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Old Feb 12, 2013 | 02:56 PM
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F-16C
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Joined: 01-24-2013
Posts: 188
From: FRESNO CA
GPS test
Got to compare my GPS to the HHR's speedo today. The speedo is -1mph off after 60mph all the way up to 80. Up to 60 it is -2. I can live with that.
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Old Feb 12, 2013 | 03:58 PM
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Old Lar
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Joined: 09-11-2007
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From: Palm Bay, Florida
My speedo reads high by 1-2 mph at 60-70, if you consider that the GPS is correct.
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Old Feb 12, 2013 | 04:43 PM
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badassbowtie
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Joined: 02-19-2010
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From: Buffalo ny
Mine is always like 1 MPH higher when I pass the radar "check your speed" things....also my programmer MPH seems to be dead accurate with the radar...

I assume its just bit high from the factory?
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Old Feb 12, 2013 | 04:48 PM
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ChevyMgr
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Joined: 11-23-2007
Posts: 8,210
From: Texas
Can we be totally sure that the GPS is not the one that's off?
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Old Feb 12, 2013 | 06:28 PM
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SS fan
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Joined: 10-09-2010
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From: Tacoma
Anybody who can see 1 or 2 mph on our speedo can see way better than me...

I compared my gps with my aeroforce, which plugs it the obd port, they were right on, still can't see the speedo.
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Old Feb 12, 2013 | 07:55 PM
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Fox Hat
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Joined: 02-21-2010
Posts: 537
From: Burlington, ON
My GPS may be off a little . Check Max Speed.

Name: topspeed.jpg Views: 136 Size: 38.6 KB
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Old Feb 12, 2013 | 10:22 PM
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firemangeorge
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Joined: 12-06-2009
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From: Alabama
Funny thing. My regular speedo and the RPD speedo are 1-2 mph different at about 65mph. Weird because I thought they get the readings from the same source.
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Old Feb 12, 2013 | 10:52 PM
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Snoopy
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Joined: 05-09-2006
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From: "Upland" Mesa, Arizona
SLIPPAGE
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Old Feb 12, 2013 | 11:12 PM
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sleeper
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Joined: 01-09-2007
Posts: 16,081
From: SE USA
Mine seems more accurate since I added the slightly bigger tires..
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Old Feb 13, 2013 | 10:07 AM
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IgottaWoody
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Joined: 01-13-2008
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From: Washington State, where it rains
If you look closely at the speedo you'll probably find the needle is not quite on the zero mark....so whatever the amount the needle is off will show thruout the entire range
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