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    Stock 2007 LMM with a bullydog tune

    Ok thanks for your help. I was really hoping I could still use the bullydog tuner and delete my DPF. I like the idea the I can return the tune to stock but I guess LMM having a different operating system really screws things up. :( I just might put a new DPF in. There $1200 for a gm DPF in...
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    Stock 2007 LMM with a bullydog tune

    I am a newbie to this forum and i have a few question that I'm hoping someone can answer. :) I have a 2007 LMM with a bully dog tune install. I purchased it to observe how many regeneration my truck has. I don't drive the truck much and it goes into a regeneration twice a month ( every 400 km )...