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The only good thing about an 811B is being able to impress people if you have the knowledge of how to set the time.
I replaced mine with an M803 – which allowed me to get rid of the factory OAT.
Let me know if you want my old 811B.
It looks like my reply somehow edited your original post.
Yeah, I noticed that!
The original question was basically “any idea what to replace a Davtron with, other than a $400 Davtron?”.
I love the looks of the 811B. And it matchs the DME perfectly.
Yes, it takes some time to set the clock and your finger will hurt.