NOTE: When submitting your order number and file to be updated, they must match. If the files do not match, we will default to the file that was provided originally for that order.  If you have previously purchased one of our ECU Tunes, use this page to update to the latest version. This only applies to updates for the same car and modifications as the original tune you purchased. Please enter the correct order number that the file you want updated came from. If you have made several tune orders or options changes orders in the past, please choose the one that contains the exact file you need updated. If you want to change fuel type or stage of tune, you will have to purchase a new Staged Tune. If you want to change selected options for a previously purchased tune (launch control, traction control, burbles, etc), please use this link: Staged Tune Options Change Change Log - For the full changelog click HERE Buying Used The discounted ECU staged tune updates, option changes, and customizations are reserved for the original owners of the tune who paid for their files to support our work. Tune Updates are limited to original owners of the tune in question. If you are a second-hand owner of an AP and did not purchase tunes from us previously, you will need to purchase a new tune. Refunds will not be given for orders that were fulfilled; however, we will apply payment towards new tune files if necessary.  If you love our work and want to contribute to continued development and support, please consider supporting us and becoming an original owner of your tune. :) You can read more about buying used EQT tunes Here: