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Holden got dragged over the coals for this.
It used to be possible on a vehicle that had done less that 100km to reset the odometer to 0, some dealers were doing this again and agin on their demo vehicles (This is for VT and later that have digital odometer, not sure about VR/S)
The feature was then removed from Tech 2 several years ago.
I believe it is possible to set the odometer on a new speedo with Tech 2 to anything you want, but once it has more than 100km's it can no longer be changed.

Obviously there are some smart bunny's out there who have a work around, as every year people are still getting caught for speedo tampering.

yoda69

i can reset your VN-VS L3 trip to whatever you want
VT S1 clusters with a white rear cluster housing i can do
VTs2 & VX with black rear housing im still working on
VY & VZ are fine
pm or email me for pricing
robATmemcalsDOTcom
Cheers Rob

Do they reset to zero after 999 999 kms?

LoL i was think of that myself surely generating the same pulse as the speedo sensor leave it running until it went back around.
Just playing bob not really something i need or wanted to spend money on i have 1 low k cluster and 2 others with high k's i was going to mess around with.

i worked out how many pulses it needed per km for someone ages ago and thought maybe soundcard sound generator into speedo but man it would of taken so long it wasnt funny get doc to do it for you

yeah and on a vn-vs type dash you'd probably wear out the gears in the speedo before it got back to 0!

if you generated 200km/h signal it would take 100 odd days to clock over 500,000 km, & ive never tried to set one at 999999 , i might do it just for a giggle
i know some digital odos stop & indicate "odofull" .lol
might have a play tomorrow

Rob

How did it go bob be interesting to hear if it worked

I can't remember who it was in the V8 stupidcars that was damaging motors and the team set the Motec display to flash $$$$$$$$$$ signs or KABOOOOM when it hit the rev limiter.
Changing MY10 to proto MY12 Captiva clusters with Tech2 also lets 0-100km only change.....gets a bit nervous before pressing ENTER...check old kms enter new kms.....double check

well i got the tech1a up and running, got the a new eeprom working in the cartridge with the vs systems bin file, ill start playing over this weekend to see if i can hookup the laptop with the tech1 and get some aldl code happening, i might start a new thread. If anyone has any other bin files or cartridges to share it would be appreciated.