I believe level 5 was where I ran my smarty at when I had a stock transmission. It didnt last long though.
Hes got a 6 speed, I was only giving an example.You technically can run Sw#9 on a stock tranny, it just depends on your driving habits. (There is no certain safe tune to run on a stock tranny) if you got a 48re I would just advance timing and not go above Sw#3 good luck bud.
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