A little confused.

[Sesco4]

So I got my email today with my tunes and I'm a little confused. It came with two ECM tunes and two TCM tunes. So do I load one of each for the ECM and TCM or is it just one of the four that I load to my truck. Thanks

 

[JennaBear]

Correct, you choose which ones based on your desired driving. 1 ECM and 1 TCM