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Message: <blockquote data-quote="2011reptar" data-source="post: 2076254" data-attributes="member: 75991">Okay, so I guess this is “solved,” and the first shop was right after all.I drove two more Gen 1s today and they both had the same shaking shuddering idle mine does. I only got to hook Forscan up to one and it also produced some minor misfires, so that checks out to be “normal” as well and is why ford has a threshold before it sets off a light. One only had 30k miles and was a 2014, one had 88k and was a 2011. I guess it is truly the cam profile of the 6.2 specific to the raptor. It’s the only difference between our 6.2 and the 6.2 in super duty.I will be looking to a tuner to raise the idle a little so it doesn’t dip so harshly as I’m just not comfortable with it.I can definitely live with the shake, I just thought something was wrong with the truck, but lesson learned!I will update this thread if it turns into anything else as I’m still getting a weird occasional pop from the driver side exhaust that makes me think it’s running too rich. But anyway, thanks everyone for the suggestions and advice!</blockquote>