I have noticed with my edge CTS tuner on my truck that it doesn't like to black smoke at idol. I am not here asking "oh how do i get more black smoke" I am merely curious of what causes this. With the truck in park or neutral and me revving it up it will only give off a few puffs of smoke compared to my buddies old truck of the same year without an edge and he could produce a nice cloud about the same size weather he was driving or at park. My truck on the other hand will only smoke a lot when I am driving, but at park it will only puff. What causes this to happen. Thanks.
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