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Anybody used an aftermarket ignition (like MSD)?

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  • Anybody used an aftermarket ignition (like MSD)?

    I drive a dedicated '99 Dodge Ram van that is about due for a tune-up. Has anybody done like on the gasoline v-8 engines and run a higher energy CD ignition to be able to increase the plug gap a bit for a slight increase in power and economy? What kind of gaps are you running? Also, any positives from Iridium plugs? Seems like if we were to take advantage of the high octane of CNG, we could decrease the fuel mileage detriment.
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