swapping to holley hp system. i was wondering what wires people have kept and what wires people have tossed during the swap. mainly c100 since the holley hp controls everything.

Can't say I recall hearing anyone on TGO using it.

If/since it controls everything (on the engine, anyway), then you can disconnect/remove any wires that were used to control the engine. Leave the wires for the gauges, power, etc.