Dakota Digital speedo calibration frustration!!!

[anguilla1980]

I'm hoping someone can please assist me with calibrating my Dakota Digital VHX gauges for the VSS on my Tremec Magnum. Prior it was working off a mechanical speed sensor in my TH400. I'm trying to follow the direction in the VHX manual but it's not doing what it should, or I'm not understanding how to do it. The speedo right now reads exactly 2x what it should. I have to do process number 2 because there is no way in hell I have a place to measure out an exact mile around where I live to do process 1, so I'm trying to do it with a GPS app on my phone.

First off, in the setup menu, I have the sensor type set to "NORMAL" and not "BUS" which I think is correct. When I get to the part where I start driving and push & hold SW1 to increase or push & hold SW1 again to decrease, this does absolutely nothing as it should. I start driving when the number of pulses starts and I can see the pulses increase as I drive. But when I push & hold SW1 it sends the speedo needle to max and if I push & hold SW1 again, it sends it to zero. Like WTF! I tried this several times and all I did was overheat my engine to 255F because I didn't realize that this process interrupts the temp signal for the damn fans!

I did a few variations too like waiting to drive until after my first push & hold of SW1 as well as after. I would sometimes get an error that says "pulse too low". Then it only gives you one attempt at each push & hold SW1 before it just kicks you out of the calibration process.

This has me at my wits end. Can anyone please shed some light on what in the hell the process really is?



Thanks!!!