Colder Spark Plugs ON non-F/I

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03-21-2008, 08:23 PM

Scionriderz

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Colder Spark Plugs ON non-F/I

Hey Scionlifers...
My buddy just gave me a new box of ngk iridium ix sparks and they are one step colder the number is BKR7EIX-11 and was wondering if i could install them or will that make my motor run bad also it states not to gap them so yeah

03-21-2008, 10:43 PM

BuddhasTC

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it should run fine with those

03-21-2008, 11:10 PM

nominal_asu

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probably no benefit to doing so though.

03-23-2008, 04:30 PM

silversurfer897

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I think iridium is what you're supposed to have. I remember seeing somewhere that on the tC that that's what you're supposed to have.

03-24-2008, 01:45 AM

phoenix_2o1_rising

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i dont think the question is the material but moreso the 1 step colder on a N/A set up... and if that is what you're asking... from what I was told, there is no benefit to doing so until you go F/I

03-24-2008, 02:10 AM

huafist

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The reason you go a range colder with F/I is because it helps stave off spark knock. With a N/A setup it's not gonna make any difference.
FWIW, the iridium plugs are good for a N/A setup, but they're junk for a F/I setup. Iridium doesn't conduct as well as copper, so you'll blow the spark out with boost. Use standard NGK copper plugs for F/I.