Well, just got my new Nelson 93 octane tune in through the mail a few minutes ago. I am at work so can't install it yet. Anyways, it didn't come with any instructions but I have printed up the stuff off of Allens website. For those of you who have installed his computer, is there anything else that I really need to watch out for or be aware of? Has anybody had problems doing the anti-theft pass-key re-learn or had to do the Crankshaft re-learn or idle re-learn. My truck is a 2004 and it is pretty new, but only has minor mods and I am trying to decide if this would be a better install to wait to do on the weekend or if it should just be a quick install and I can do it tonight. Any help, suggestions, or ideas, please respond.