Missing at 2200 rpm???

when I have problems with misfiring I like to change plugs wires cap and rotor button. I like champion plugs and use RC12MC4 they seem to work nicely, when replacing plug wires I go with Napa Belden lifetime wires they are warranted for the life of the engine as long as you own the vehicle and were the one who Installed/had them installed, and are a nice dark blue with silver writing. the plugs are around $30 for the set and wires are around $40 for a set