They give you more power by burning the fuel more efficiently. The compressed air fuel mixture burns faster forcing the piston down with greater velocity creating more power. I don't have a dyno sheet to prove it but that's the concept. I have the iridium plugs and the premium wires, when I put the plugs in I felt the difference. Then I put the premium wires in and felt the difference. I'm thinking about ditching the premium wires for the hot wires which is why I asked if any one had an opinion on which is better. Either way the new coils is my next step.
