Hello all. Just picked up a 2011 Dodge Ram 2500 HD. Already has a full turbo back 5" exhaust with dpf and cat delete. Since there's no cel in I can see where a tuner was installed I'm assuming there is some sort of tuner already done loaded onto the truck. Would I be able to override the current tune? I know it's hard to answer since I'm not sure what tuner was used before. Thanks for any help