The short answer is there isn't a hp difference between plug wires unless wires are d3fective somehow. I guess if they are solid core and the RFI is interfering with the ignition electronics, then yes.

I like Magnecor wires but have used other spiral core brands, NGK, BWD, MSD, Crane, etc and all have worked well. Many OEM plug wires are now spiral core, even my '79 Peugeot had stock spiral core wires on its little 4-cylinder Hemi.

R.