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ResFirma Mitescere Nescit
Name: stew
its not supposed to lose the tune when upgraded...but
a rule of thumb has always been...copy/export the custom tune from the predator and save on computer.
then return truck back to stock
then update predator
and then upload custom tune back to predator
then load custom tune to truck.
Any time the factory tune is uploaded back to the truck the custom tune inside the Predator will be lost.
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