Trans tune need help!!

[Lsobs_1996]

I am trying to get my Speedo correct and my trans to shift correctly but I?m not quite sure what to do I need the trans rev per mile and the vss pulse per mile. Any help is appreciated. It?s a 1996 obs with a 5.3 and a 4l60 it has 3.42 gears and tire size is 275/45r20

[blindsquirrel]

I?m not quite sure what to do

If you can't figure it out, and you're able to see what's currently in the file, how is anybody else that can't see what is in the file (because you didn't post anything to look at other than a story) supposed to tell you which things need to be changed and by how much?

[Lsobs_1996]

Sorry still trying to figure the website out only just made an account yesterday but I got the trans fixed and the speed sensor corrected but my cluster is still off so trying to figure that out now

[Alvin]

There is a gear/Tire calculator in HPtuners that does a reasonable job. Under file - edit.

[Lsobs_1996]

My speed sensor is correct now with gps but cluster is 10mph fast is there anyway I can fix that or do I just have to pull the needle off and move it