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Originally Posted by QLD-Bluey
A valuable lesson here grasshopper............expensive doesnt always mean best!!
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Maybe as far as these satellite dependent portable navigation units are concerned, but the top end VDO-Dayton systems (which now costs $3000+), that are OEM on many many brands including almost all European brands, and some Ford, is the best navigation system IMO. The system fitted to the AU/BA range was from memory a $4000+ option. The ONLY issue with the VDO-Dayton systems is the price to update the CD maps. But they're free if you know where to look.
All these portable units (TomTom, Navman, ect, ect) depend on satellite signal for accuracy. If the signal is a weak one (which it is at most times) the units don't work properly. They don't work in tunnels at all. Limited to no signal in bad weather and built up areas. VDO-Dayton systems don't depend on satellite at all. It's hard wired into vehicle. All map info is on the CD. Speed signal is taken from speedo wire off
ECU.
After using many types of systems, the VDO-Dayton kills them all. Accurate 99.9% of the time and upto 1 metre. Try getting that with a portable unit.
01-01-2011, 08:50 PM
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