Vehicle Speedo correction issues E38/T43
Hi Guys Ive searched high and low through here on this topic, and I read somewhere that speedo correction cant be done correctly
I have a VF L77 and 6L80 in a VS Commodore ute.
I can do what Im trying to do here easy when doing LS1 conversions and using LS1 OS
It appears that I can only change the general VSS stuff and get the speed in the scantool to match my GPS, but the trouble is, when actual speed is say 80kph, my VS speedo only reads 30kph. I can change this globely, but obviously I need my ecu speed to be accurate for my gear shift points, and it seems the fine tuning doesnt work at all with this OS.
I realise I can add an electronic adjuster to my speedo, but does anyone know how to adjust without that
I have speedo set as serial data, which is the only setting it will work on, and flick shows the rest
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