Sct X3 won't flash

I have a 2005 mustang GT and I brought a used sct X3 and it says it's unmarried but it keep saying it can't write the Ecu when I try to program my car anybody ever had this problem before?

have you updated the software?

You need a tune written specifically for your ECU. They all have different code numbers and if the code number of the tune doesn't match the code number of your ECU then it won't work.

In other words, buying a used SCT means you have a vessel to deliver a custom tune to your ECU. It does not include the custom tune. You still need to buy that.

^^^Yep^^^

Original purchaser normally gets free tunes for life (of their ownership). Second-hand ownership = you'll have to pay for tunes.

Iceman62 said:

^^^Yep^^^

Original purchaser normally gets free tunes for life (of their ownership). Second-hand ownership = you'll have to pay for tunes.

Click to expand...

Depends on where the tune & tuner came from. Not all tuners offer free tunes for life even if the device is new.

As for the original question, you should be able to load a "strategy tune" (canned tune from SCT) but once a device is unmarried, any custom tunes that were saved are not accessible.