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You sure about that Matt, they are called resistor plugs because they have a resistor built into the plug,most stock spark plug caps also have a resistor in them which on Yamahas especially goes bad over a period of time and makes the ski run like crap.
A resistor resists the flow of electrical current which decreases spark output at the plug. You are right, normally in a stock engine it makes no difference however if you are running high compression and total loss and have spent a small fortune already to get the most spark possible why hamper it by running resistor plugs?????????
You have a good point! The stock plug wires are resistive, so there is no "need" for a resistor plug. I have run resistor and non-resistor plugs back-to-back on these setups and never could tell a difference. But I am not very good at telling small differences in performance.
Now - for higher performance setup like MSD total loss, you'd be running solid core wires (non-resistive) and non-resistor terminals. And MSD instructions tell you to run resistor plugs with their TL ignitions. :biggrin:
The ATP Total Loss uses the stock coil (resistive wires, stock terminals) and still requires resistor plugs (Disclaimer: I might be wrong. It wouldn't be the first time)
Those were my assumptions that I didn't type out - you're right, though. But as you pointed out, it won't hurt in a stock setup, and a performance setup most likely needs the resistor plugs anyways.
