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Discussion Starter #1
I noticed my new 850 SP with only about 5 hours on it likes to dog off the line and won't free rev in neutral until it's really good an hot. I assume it's probably got to do with the factory plugs, I read upgrading to some NGK ILZKAR7A10 Laser Iridiums fixes these issues, my question is it safe to change to a hotter plug before I finish the break-in period?
 

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It won't matter. The sooner the better. I changed mine while it was still in the break-in period.
 

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^^same here.

Mark
 

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I agree, it won't effect your break in.
 

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Discussion Starter #6
Swapped in the Iridiums tonight, here's a look at what my factory plugs look like at roughly 5 hours and 33 miles.

 

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Thanks for posting that.
you should pull the iridiums after the same amount of time and post those picts too.
 
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