Re: Speedo error - Saab 9-5 Bulletin Board - Saabnet.com
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Re: Speedo error
Posted by Dean (more from Dean) on Fri, 17 Aug 2012 06:38:48
In Reply to: Speedo error, Les_H, Fri, 17 Aug 2012 05:54:21
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This has been discussed before.
All speedos have these errors by regulation. This speedo movement [+2002 ? 2003] is a stepping motor and the error seems to be constant at all speeds.
I have timed measured miles and result agrees with GPS. I know the speedo error and I drive true speed, not indicated speed.
With Garmin, you can enter a tech mode and see real time speed to one tenth mpg
No one does creditable performance testing based on the speedo.
posted by 65.64.191...
Posts in this Thread:
- Speedometer off based on GPS and ECU data, Brian, Fri, 17 Aug 2012 03:29:20
- Re: Speedometer off based on GPS and ECU data, Slug , Fri, 17 Aug 2012 04:42:44
- Same here, Vicsaero95, Fri, 17 Aug 2012 04:28:03
- Speedo error, Les_H, Fri, 17 Aug 2012 05:54:21
- Re: Speedo error, Dean, Fri, 17 Aug 2012 06:38:48 <-- Viewing This Message
- Does that affect 0-60 tests etc.?, Tim, Fri, 17 Aug 2012 06:22:01
- Old tires read faster, shorter. nm, Norm95, Fri, 17 Aug 2012 06:21:59
- Mine reads 3mph fast, 03 Aero. NM, S-Works, Fri, 17 Aug 2012 05:34:00
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