1985 chevy k10 with 08 5.3/4l60e e38/t42 with np 208 transfer case
Working on getting the vss sensor and speedometer working correctly.
Using a DD 8k pulse generator wired to the 2 wire vss pigtail to feed the ecm and DD speedometer.
The pulse gen seems to not be consistently working below 12-13mph.

Its a fresh motor and transmission, I have not been driving it much until I get this sorted out.
I m guessing the generator doesn't have enough pulses at that low of speeds to work properly.
I know the tune is also not correct yet either.

If anyone can look at the log and tune tell me if my suspicions are correct would be great.
Thanks

2008 current running tune.2-1.hpt
9.hpl