Well, I just said misfires from reading the first post.

What that tells me is whatever is causing a mixture fault is affecting both banks... but not whether it is lean or rich, idle or under load... The more common would be lean and at idle, and one of the more common problems for that would be the smaller elbow offshoot of the rubber air duct torn in the ribs. Check where the air duct goes from the MAF sensor to the engine, the smaller elbow that goes to the idle control valve makes a bending turn, on the outside edge of that turn is where it cracks between the ribs.

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