I have about 5 weeks into running my R8 in my new Subaru Outback, and I noticed the arrows seem to be a bit sketchy as to correctly finding the source. I have been running R7 in my Jetta and did not see this issue. It detects ok, but is not as accurate in direction as the R7. I know that a rear source may show front if nearing an overpass or other reflective object, but this seems to happen a lot more often than the R7.
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