Try CP performance I got mine there it been a year ago. Its awesome if you already have a GPS you only need the gauge

any new info on when this tach will be produced again or one like it?

I am pretty sure they are all gone. We had a few left but sold them all to 1 customer, so there may be 1 available out there? I wish they still offered them, they were the best gauge on the dash! If they ever do come available again, we will be the first to tell you guys! -Eric

What about technical support, parts, the datatach website where you could upload your results!.

This sucks!!

if you dont want yours anymore ill buy it

Lavorsi Data Tach
 

I've got one. GPS spedo doesn't work though. As far as I know it has a dead non replaceable battery in the antenna puck.
and the company has been out of business for a while now. Hey but if you want it make me an offer.

The non-replaceable battery can be replaced quite easily, just an FYI.

There is one for sale in the Swap Section.

I can't see how the battery can be replaced easily because the antenna puck is one piece from what I can see.

If the puck is like all other gps speedo units, the cap unscrews from the base and there is a round watch style battery soldered in it.
There was a really good step by step posted by Boatnt, I'll try and dig it up.