Well I can't say for sure, but 'yes' to your question. From what I can tell by poking around with the software, and talking to Phil, Autotune is a tuning mode, once 'tuned' you have set the upper and lower limits of correction. Locking those 'tuned' values in requires the down/upload to the ECU. Once set, your car will still "learn" but only within the boundaries set in the tuning mode. Phil feel free to negate.