Speedometer correction

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Nkelr0426
Posts: 1
Joined: Sun Oct 30, 2022 11:49 pm

Speedometer correction

Post by Nkelr0426 »

I'm new to this. I have alot of automotive knowledge but I'm still trying to figure out tuning. I recently changed my rear-end in my cng van and now the speedometer is way off like 10mph over on the highway. The dealership won't help at all so I'm stuck. I just need to reprogram it to read the correct speed.
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