Changing tyre circumference with Op-com

[joff-turbo-nova]

Hi all

Not too sure whether op-com related discussions are allowed on here - if not mods please delete!

Bit OT as the vehicle is a 2010 Meriva Z14XEP

I am changing the clock mats on my dash to VXR ones and the speed points are in a slightly different place.

I am lead to believe that you can change the tyre circumference settings somewhere in the system with op-com which will allow me to set the speedo up correctly.

I have an Opcom system but can't seem to find the correct place to change the settings - anyone point me in the right direction???

I have the full dash clocks - would it be easier to swap the clocks over and reprogram the clocks and mileage if that's possible?

Many thanks

Joff

[mowgli]

plugging laptops in is way over my head joff, but that little signal fixer that hobbit had me stick into his v6 to sort out his rev counter at the nats was a doddle to fit & once set, had the clocks reading pretty good.

[joff-turbo-nova]

plugging laptops in is way over my head joff, but that little signal fixer that hobbit had me stick into his v6 to sort out his rev counter at the nats was a doddle to fit & once set, had the clocks reading pretty good.

Yes, I had a similar one in my Vectra to get the speedo reading right on the digidash I grafted into it .

The Merv is a little different as it uses the canbus system between the dash and the body control module (BCM) so I don't think you can just hack into the signal - infact I don't even think there is a speed wire !

Thanks for the input anyway !

Joff

[Tom-Tank]

I will plug my opcom into my C and VXR tommorow and see if i can work it out for you, might be something you can only do with Tech 2 though

[joff-turbo-nova]

I will plug my opcom into my C and VXR tommorow and see if i can work it out for you, might be something you can only do with Tech 2 though

Cheers :thumb::thumb:

Let me know if you find anything

Joff