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Message: [QUOTE="colecoop56, post: 761746, member: 11286"] My 13 Does the exact same thing and it was worrying the crap out of me. It does it to me on the highway. It will randomly when I give it a little gas on the highway drop from 5 psi down to zero and then back to 5 psi keep doing that pattern until I give it a lot of gas and it will all the sudden like spike out of it. Mine was doing it bad for a while and then I updated my tuner and it hadn't done it in a month until this past weekend. I dont know whats going on but its annoying. Definitely doesn't do it as bad as the first time it was doing it though. Could it just be the H&S tunes? [/QUOTE]

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