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How often do you replace sparkplugs?

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Old Nov 1, 2014 | 07:12 PM
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r1owner
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From: STL
How often do you replace sparkplugs?
If you run your car at HPDE's, is there a recommended interval other than the one in the manual?
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Old Nov 3, 2014 | 02:42 PM
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Whitnith
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I change mine before every event, but I also run E85. For $4 it's easy to help make sure my car is in the best shape it can be in for an event.
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Old Nov 3, 2014 | 03:13 PM
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r1owner
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From: STL
Hmmm, OK, I have about 4 events on mine and was thinking I should prolly think about changing them out.

You just run stock plugs or something different since you're on E85?
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Old Nov 3, 2014 | 06:33 PM
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Whitnith
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From: Milwaukee
Originally Posted by r1owner
Hmmm, OK, I have about 4 events on mine and was thinking I should prolly think about changing them out.

You just run stock plugs or something different since you're on E85?
I run one step colder plugs. It's not just for E85, but due to the power increase in general. They are just the basic NGK BKR7E, which is the one step colder copper plugs.
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