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Old 12-23-2011, 09:49 PM   #1
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msd ignitoion control 6425 6al 2 on 94 yj 4.0?

Anyone have this model in their jeep? Looking to upgrade my ignition again. Curious how much of a power gain I'm looking at and how difficult the install is. Anyone have experience with it?

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Old 03-14-2012, 10:27 AM   #2
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Im surprised no one has said anything yet, I am also thinking about doing a full MSD upgrade and was wondering the same thing. Have you found anything out?

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Old 03-14-2012, 10:38 AM   #3
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I have not used the MSD but I have used the Jacobs Ignition on my 94 4.0, the first time I rebuilt the engine with a little larger cam an throttle body the Jacbs Ignition gave me better mileage, smoother pull from low rpms, I like it, but any "hotter" ignition will take its toll on plugs, cap and rotor on any engine.
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