Look at these plugs!

[Zrussian13]

That’s boostane for ya. O2’s will be orange as well.

My o2s were orange when I had them out last month but just orange colored. Not a thick layer of orange residue like my plugs have on them.

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[K4fxd]

I wish someone made an old school style sparkplug for the coyote.

 

[CJJon]

I wish someone made an old school style sparkplug for the coyote.

Fully agree.

EDIT: And one of these

 

[KeyLime]

I wish someone made an old school style sparkplug for the coyote.

These work great in my Continental 520. Coyote...not so good.

.

 

[K4fxd]

I prefer Lycoming

 

[K4fxd]

Looks like NGK does. Only they are priced higher than the iridium's.

They do say racing on them

https://www.summitracing.com/parts/ngk-95811

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