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View Poll Results: How far off is your HUD vs your Analog Speedo?
4-6 mph under the analog 0 0%
1-3 mph under the analog 0 0%
dead-on with the analog 3 21.43%
1-3 mph over the analog 8 57.14%
4-6 mph over the analog 3 21.43%
my speedo and HUD are no where's near being close 0 0%
Voters: 14. You may not vote on this poll

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Old 09-26-2004, 02:07 PM   #1
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Default HUD Vs Analog Speedo

How does your HUD speedo info compare to your regular speedo? For me, my analog is dead on with the vehicle'* speed accurate and my HUD is always 2-3 mph higher than the analog. I verified this when driving by one of those signs that displays your speed (you know, so everyone in the neighborhood can see if you're speeding or not ).
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Old 09-26-2004, 02:13 PM   #2
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It varies by speed. At 70mph on the HUD, the GPS also reads 70, but the analog reads 1-2 lower. The GPS and HUD agree at 125, too.
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Old 09-26-2004, 02:17 PM   #3
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I think mine is different than when I got the car, probably due in part to a tire change. Not really sure. I think the analog is a mechanical gear, and the HUD counts pulses?

Funny stuff discussed in the past:
http://www.bonnevilleclub.com/forum/...pic.php?t=1180

Pay particular attention to Amy_Lynn'* comment, and Jstpsntym'* advice
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Old 09-26-2004, 02:18 PM   #4
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Depends on how fast I'm accelerating, The speedo lags.
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Old 09-26-2004, 02:25 PM   #5
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Anyone have wiring diagrams for both speedo'*? IF they are both driven from the PCM there'* no reason they should be off. Just ticks me off when I see the HUD higher than the regular one. I like everything working 100% becasue I'm a stickler like that.
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Old 09-26-2004, 02:27 PM   #6
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They pull speed from different wires, but You're basically not going to get them exact unless you redisgn the analog speedo to be lighter and have stronger magnets.
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Old 09-26-2004, 06:40 PM   #7
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The dash has lag because it'* physical not light.
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Old 09-26-2004, 09:35 PM   #8
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HUD reads between 1/2 to 1 mph higher.
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Old 09-26-2004, 09:45 PM   #9
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HUD reads.. "You have an old car, you don't have a HUD, just pay some attention to the cluster"

Or approximatly 0mph difference


-justin
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Old 09-26-2004, 09:47 PM   #10
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the HUD is usually around 5 mph higher than the speedo on mine.
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