The AP3 won't work on your RS. You would need to purchase the specific one for it.

 

Focus ST/Fiesta ST AP part number and focus RS part number are different

AP3-FOR-004 RS
AP3-FOR-001 ST

Without Cobb reflashing don’t know if it would work.


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They're right,
The ST Accessport will not work in it's raw state to the RS
Cobb can Reflash it or you just have to get the RS one.

As for your license, I don't know, last time I had accesstuner for my ST they didn't make you take the class then they took it away

 

What everyone else mentioned here is correct. If you uninstall your AP from the ST and send it to us, we are able to make it an AP3-FOR-004 which will be compatible with a Focus RS. The total cost for this would be $300 ($150 to change the part number + the $150 difference in price between the two Accessports).

As for Accesstuner, each instance of software is connected to a specific Accessport. Since your Accessport part number will change you'll need a new instance of the software. Just let us know about that need when you send in your AP to get converted to the FOR-004 part number and we can help.

Kyle@COBB