Using PCMTec on Previously Tuned Vehicles
Last updated: Oct 26, 2026
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Licensing Requirements
If a car was tuned by another PCMTec account (given the file is not tuner-locked), you must:
- Perform a read on the vehicle
- License the file with your own PCMTec account (if applicable)
File Access Based on Tunerlock Status
Non-Tunerlocked Files
- You can license and open the file
- Parameter access is limited to your account's entitlement level
- Some parameters are only accessible in the Workshop Edition
- Datalogging is available
Tunerlocked Files
- No modifications can be made to the existing file
- Only the original tuner who locked the file can make changes
- Datalogging is not available - only the tuner who locked the file can datalog the vehicle with PCMTec
Important Note
The tunerlock status determines your ability to datalog the vehicle. If the file is tunerlocked, you will not be able to use PCMTec's datalogging functionality on that vehicle until you return the PCM to stock.
