After reading through exactly 3,209,859 posts regarding the MMM, I didn't see this question come up. Not wanting to exceed the maximum page count per thread limit, possibly causing DTR to self destruct, I decided to start a new one.

The Q'Zilla site has several updates for the MMM, including this one, which is a cut and paste job:

File Name: 325 MPG

Models: DMPG0406
Software Version: 20070913
Feature Code Enabled: FACTORY

Features:

* Factory Tuning file that all 04.5-07 Max Mileage Modules are shipped with
* After updating with this file you will now have a feature code that is not enabled from the factory


If this is the original factory tuning file that is shipped with the MMM, what the blazes is the feature code that you didn't have, and how and why do you have it now?

Inquiring minds (who might buy a MMM) want to know.

 

It's a feature code that lets you see the update thats on your modual thats it nothing special.