So the 1705 can be used to check codes on other vehicles even if it's vin locked ?Actually with the 1705 you download the factory or the program that is on the PCM at the time to the 1705. Then you upload the new program from the 1705 onto the PCM. The 1705 is now vin locked to that vehicle and can not be used on another vehicle until the stock program is reinstalled and the performance program erased.
This is where you can find 1705's at discounted prices, they are vin locked to the vehicle that they were used on and can not be used on a second vehicle. They can be used as a code reader or a boat anchor.