Sounds like it may need retuned but if you add some fuel to the closed throttle area cells where the pop is in terms of rpm pop occurs, it may remedy the pop. If it's pinging on roll ons and you want to try something cheap other than paying for a new tune, you might try a new set of stock plug wires and plugs. Gap the plugs at about .036" gap and see if that helps. If it doesn't, you could try a colder plug gapped on the small side again. Until it's on a competent dyno operators dyno, it's hard to say. It could need more fuel on the accelerator enrichment table, it could need less timing somewhere or it could be both. You do have the O2 sensor eliminators installed that come with the power commander I assume?