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Thread: Iridium Spark Plugs

  1. #1
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    Default Iridium Spark Plugs

    I've seen these mentioned on a couple of pages in the forum, and have browsed for them on a few websites. But what I want to know before I decide to buy some, is will they make any noticeable difference to my Vec, in any way at all?

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    ?

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    Regular Member parapaul's Avatar
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    I think the honest answer is no.

    The theory is that Iridium spark plugs that require less voltage to spark, burn fuel more efficiently, spark at leaner air/fuel mixtures, and deliver higher horsepower and better consumption.

    Whether any of those claims are measurable or noticeable is another matter...

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    Regular Member gtr1000's Avatar
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    Vehicle : Insignia

    Trim : Sri

    Engine : 140 Ecoflex S/S

    Year : 2013

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    So... in essence, not worth the £8-10 each? Might leave it then...

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    Regular Member mark1319's Avatar
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    Yep you aren't going feel the difference.

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    Regular Member parapaul's Avatar
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    I think in a highly tuned engine, any benefit they gave would be more noticeable, but with all respect, they won't make your 1.8 into a monster

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    Regular Member hagga's Avatar
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    Quote Originally Posted by parapaul View Post
    I think in a highly tuned engine, any benefit they gave would be more noticeable, but with all respect, they won't make your 1.8 into a monster
    if you're tuning it's more about reliability, I believe iridium plugs will last longer than normal ones under tuned conditions... I'll be fitting a set before I get mine remapped just because I want everything running tip top.

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    Mm, I won't be getting mine re-mapped ever. I may get them for the reliability... but meh.

    And she isn't a monster, you're right. She's a beast

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    I pulled my spark plugs out the other day and they have four electrodes! they are NGK R, mine is a 1.8 sri, an up to 80ish it kept up with my mums bfs 2.2 direct.

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