Some wires do have thicker conductors. Most of Taylor's wires have a thicker core than some of the more common retail wires.... but you have to build them custom if you want them for the 7M. One thing to remember about ignition wires is that the hotter they get the higher the resistance of the wire. The thicker insulation helps a LITTLE here but it's not enough to justify switching over. If the wires are crap then replace them, if not then don't worry about going all out and buying the top of the line in the racing world.
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