Now that my truck will be paid off in a couple months and due to already having about 75k miles anyway, I'm not as worried about ruining a warranty. I'm trying to learn about how the tunes work and the pros and cons. I've considered a bullydog but keep reading about regens and don't fully understand that yet. I'm also open to suggestions to other LML owners and to hear what has worked for them? Right now my truck is stock other than a level. Thanks in advance.