Not sure how 86 tunes are stored, but if you are in California with a tune and try to pass SMOG be mindful of this:
https://www.bar.ca.gov/pdf/On_Board_...n_10.17.19.pdf
And mainly focus on this:
Calibration Verification Number (CVN): a number set by OEMs to verify the integrity of the vehicle software
Calibration Identification (Cal-ID): an ID for the software installed on the Electronic Control Unit (ECU)