As mentioned, I'm really wet behind the ears. I've got all 3 Greg Banish books and I am actively reading. I'm following Goat Rope Garage on YouTube and actively watching. I know I have a ton to learn, but I want to get this truck fired up so I can at least move it around. I won't be doing any real work on the tune until the salt is gone from the roads. I've got a 99 Chevy K30 with a Vortec 454 that I just upgraded to 24x/CNP ignition along with cam, headers, exhaust, and PCM connectors pinned for an 0411 PCM and an LS firing order/injector assignment repined for the 454 firing order. The 0411 PCM which I have is from a 01 Sierra 4wd 5.3/4L60. I also have a "start file", as I'm calling it, that was emailed to me from another GMT400 guy who did the 24x on his 454 a few years ago with an LS firing order. What will be my best bet here? If I'm understanding correctly, I will need to license my PCM (2 credits), and If I want to directly flash the tune emailed to me to my 0411 I will also need to license that tune (2 more credits) since it is from a different VIN? Is that correct? If so, would I be better off doing segment swaps in the base tune file from my PCM, licensing, and flashing? I'm sure this is a silly question for most users here, but I have to start somewhere.