To check that it hasn't been used(currently installed in another truck) or erased from having a dealership re-flash the computer while having the predator installed you need to plug it into your truck and enter the tune mode. If it says anything other then "stock tune" or "OEM tune" then stay away. It will list the last tune installed onto a vehicle, so if it says something like "93 octane tune" or "performance tune", that means that whoever is trying to sell it to you still has it installed on there truck and it will not work on yours. There maybe something else that I'm missing so ill talk to the guys at Mopac tomorrow and let you know for sure
392 with tuning issues PLEASE HELP!!!!!