So I ordered these offline and they said they were the right plugs but I am reading on here to go colder? One other thing they are gapped at .025 is that right. I'm lost please help, I think they are supposed to be .045. BTW I have STG 2. Thank you!!

 

Bump, Anyone, I want to put these in, lol. Thanks

 

Those are a "stock" replacement. I have the BRK7eix's. 6 is stock heat range and 7 is one step colder. Mine were gapped at .028 and I changed them (very very carefully) to .040".

 

Do you think these are ok to run at .040???

 

Yep.

 

Sweet, thanks bro. Why .040 not .045? Cause they are iridium. BTW I love this site. Where else can you get an answer in under 3 minutes, thanks matty

 

You could try .045. NGK's website recommends .040 and so does Intense so I would trust those sources.

Careful though. The ground electrode is hard to get to move and the center electrode is delicate. Caution.

Iridium just has a higher melting point. Supposed to be a good conductor as well.