AMDP 2006-2010 6.6L Duramax EZ Lynk Custom TuningTHIS PRODUCT IS TUNING ONLY AND DOES NOT INCLUDE THE EZ LYNK DEVICE. THE EZ LYNK DEVICE WILL NEED TO BE PURCHASED SEPARATELY IF YOU ARE IN NEED OF ONE. LIFETIME ACCESS GIVES YOU ACCESS TO THE COMPLETE AMDP CUSTOM TUNING LIBRARY FOR THE LIFETIME OF THE TRUCK OR UNTIL AMDP DISCONTINUES SUPPORT. LIMITED ACCESS GIVES YOU ACCESS TO THE COMPLETE AMDP CUSTOM TUNING LIBRARY FOR 4 WEEKS FROM THE TIME YOU LINK THE FILES. AFTER 4 WEEKS, THE FILES WILL BE REMOVED