SLP or shbox
a car going 80-85 while the speedo says 55?
i tried changing the speed sensors from the 95 to the 93 transmission and no change. i have narrowed it down to either the gauge cluster is screwed up or the guages being different.
You need to tune it to have it corrected
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The reason the Speedo is off is cause the T56 reads a 17 Pulse Reluctor Wheel, you will need the PCM adjusted for that. It's easier than converting anything inside the T56.








