There are four ways to undo changes made in PCLink, each method works slightly differently.

·CTRL + Z - Undoes the last change made by the user, this will undo changes (including stored changes) one by one in the order they were made across all settings. This does not undo Quick Tune or Mixture Map changes.

·Right Click > Undo Short Term Changes - This will undo all un-stored changes made to the setting that was right clicked on (tables count as one setting, all un-stored cells will be reverted in the table right clicked on).

·Tuning Drop Down > Undo Short Term Changes - This will undo all un-stored changes made to any settings.

·Power Cycle the ECU - This will undo all un-stored changes made to any settings.