Easy answer for this. No they can not. I have proof for it as well. I work on the side for some ford dealers. Udating there websites, and I had them check my car to see if the flash tuners will not allow for them to see modification to the computer. I installed the tune, a week later took it off and put the original tune back on.
They used the obdII computer and scaned it. No changes, were found.
So the answer is no they can not.
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2004 Mach 1 - New Baby
Numbers Coming Soon
2001 Mustang GT - In Mustang Heaven
399.65 RWHP 384 Torque
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