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How to tell if ECU has been reprogrammed?

551 views 0 replies 1 participant last post by  Rwizard 
#1 ·
Hello all, I am hoping one of you can help me.

I have a 2000 F250 Superduty that I bought used.
I am trying to figure out if the ECU has been reprogrammed.
Is there an easy way to tell?
Also if it has been, is there any way to reload the factory ECU file from somewhere?

Any help would be greatly appreciated.
 
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