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I am fairly new to the Duramax world, but have quite a few hours of reading on here. From my research on here it appears that the V2 is for data logging and retrieving the stock programming for use by a tuner. So, I'm thinking that I need to purchase EFI live first and use the V2 to upload my stock configuration to use by a tuner to make my new custom tunes? Also, I have heard that some distributors rent V2's for this or do I have to buy it? The reason I was thinking I needed to do this is because I need the tunes to load after doing my exhaust (DPF delete), EGR delete, and PCV reroute to keep from throwing codes.
Thanks
Thanks