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Anyone using Motorcraft AGSF12FM1 plugs?


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If anyone is using these plugs (which are one step colder than stock) what gap are you using? The come gapped at .040 and I'm wondering if that's to big for 15PSI.

 

Thanks

 

 

Hey Mullens,

 

I'm running them at .035. Upper/Lower stock SC @15psi boost too.

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