I would not be surprised to see an engine in good and BROKEN IN hit 20 or more. The broken in part is important. I'm not sure I'd mess with it just yet. Give it some more time and see what happens. Mine liked 15 initial......but not 16. Anything above 15 and it produced a rough idle. As long as it runs well, I'd let it break in good and then try to put the super tune on it.
