[mptech]

I installed the Speedhut GPS speedo and have a little over 7k miles on it now.
I REALLY like it.

I don't see the tunnels / hills as really being a downside. I agree with the facts, but tunnels aren't typically that long that it matters and I would think the hill difference is not significant.
Super easy to install and no calibration issues. The Speedhuts are also customizable and led lit.

what is your concern?