I am in the process of building a base tune for my new project and have a quick question.
I am switching from my stock OS to a 12212156 OS in my silverado. I know I have to do a write entire for the change to take effect. I am also going to be applying a 3 bar OS.
Am I ok to apply the 3bar to the 12212156 OS and write entire to my truck all at the same time? or should I write entire the 12212156 OS THEN write entire again to apply the 3 bar OS?