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For many users this will be the appropriate option, and where possible will perform an OBD unlock of the ECU, so it can be further programmed for tuning. If the car is stock, this is the correct option.
Put
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an EcuTek License into an ECU that is already unlocked and/or tuned
Many older cars will have been tuned using another product such as Bootmod3, MHD or programmed one of many workshop based tools such as CMD, bFlash etc. In this case 95% of all these alternatives use a similar method to allow programming of the full rom. If the car being tuned has previously been OBD unlocked by another tool, ProECU will still need to go through an EcuTek unlock process to program the license information and additional code into the bootloader portion of the ROM.
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