Originally Posted by goingcrazy
It was my understanding that a coil only produces whatever voltage needed to fire off the air/fuel mixture. In other words stock coils can produce 50K volts but if it only needs 25K volts to ignite then that is what the plug will see.
Electricity travels from the coil to the plug and voltage is dependant on resistance required to get to the ground. So if your plug needs 60k volts then the coil will produce it. Opening the gap and/or changing the air/fuel ratio will increase the voltage required but how much unburnt air/fuel if left in the cylinder with the stock setup?
I don't believe any stock engine requires any MSD/DUI or whatever other system you want. There is no need unless you increase the compression or open up the gap. Then again if the stock setup isn't burning all the fuel wouldn't the smog nazi's be after Dodge?
Someone please correct me if I'm wrong.
EXACTLY! There's little to be gained be replacing parts that perfectly adequate. Like putting a bigger fuel pump, when the stock one provides plenty of fuel already. There's no point.
I think there is a mind set about replacing the same parts a race car might need, but we don't have race cars. We don't have 12:1 compression with 15 lbs of boost that needs a much stronger coil to ignite it.