i have a 95 camaro z28 i used tuner pro rt and now i have the torquehead system with the 411 pcm i am having trouble with setting my speedo im using a 2002 xdf file from this site but the xdf names are different then the one i used on my 95 pcm im just trying to figure out how i can fix my speedo it is out by 20 km per hour when im doing a 100km per hour my speedo says 120 km per hour im not sure what to change in the xdf any help would be super as i am still learning how to do this stuff
oh ya i have 3;42 posi and 19in rear z06 vette wheels and a 4l60e trans
i guess what im asking is what scaler do i change to adjust my speedo
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