I bought a race me ultra /mm3 I will have my exhaust next tues.
I went head and installed the tuner today. just wanted to get it in place before i do the exhaust,
I powered it up to have a look.
It did 4 updates on its own . then asked if i would like to exit.
I hit exit turned off truck and unplugged the tuner.
my question is did i just program my truck? is it safe to drive with out tuner plugged in?
thanks
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