Hptuners speedo adjusting.

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Aug 10, 2013 | 06:13 PM

kpennepacker

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Hptuners speedo adjusting.

I did a ls1 swap into s10. I used an fbody harness and trans. I used an 8.8 with 4:30 and 26" tires.

My speedo is way off. I changed tire size to 25.5 and gear ratio to 4:30 but its still reading 90mph when I'm driving 30mph. Is the s10 bcm confusing it. Or can I adjust different tables in the hptuners. Both my speedo and the speedo on hptuners read the same. Any info would help

Aug 10, 2013 | 06:16 PM

Ed Wright

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Sure your pulses per rev on your VSS is entered correctly?

Aug 10, 2013 | 06:49 PM

kpennepacker

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How do I know what the value should be to know if its wrong

Aug 10, 2013 | 07:50 PM

Ed Wright

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Quote:

Originally Posted by kpennepacker

How do I know what the value should be to know if its wrong

Manual or automatic F body trans? Manual should be 17 pulses. 4L60E should be 40 pulses.

Aug 10, 2013 | 08:10 PM

kpennepacker

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So lets say it was set on 17ppr vs the 40ppr that it should would that cause it to read to high or too low.

I'm guessing other values like ppm must be ok if the dash speedo is reading the same as the PCM.