I noticed on the Hemi, unlike a conventional engine, if you pull a plug wire, the idle does not change at all. I tried multiple ones with no idle change. I was hoping after pulling #1 (if anyone has kept up with my Cyl1 misfire) and the idle not changing it would narrow me down to that cylinder. I pulled 2, 3, 4, 5 (1 at a time, not all off at once) and NONE gave an idle change. So this conventional way of checking a cylinder does NOT work on the Hemi, I'm guessing it has something to do with dual plugs in each cylinder.