I have an 04 CompG, I'm gonna be doing some basic mods to and adding to them as I go. So I can't see the point in sending my PCM out everytime I change something to get a reflash. Plus I can get a better tune than a canned tune. So I am looking into a HP tuner. I understand that it costs 2 credits at $50 each to unlock my car, now is that a one time deal or does it cost credits everytime I hook it back up and change something on my car? Also is the MPVI PRO worth the extra $150? I like how you can hook your wideband right into the unit and not have to run it through the egr. It's also kinda neat that it will datalog without the laptop hooked to it. What wideband would I need to purchase? I'm a newb at efi tuning and I'm not big with computers but I'm sure I can figure it out especially after reading the starting hp tuners thread. Just had a couple questions is all. Thanks!