iridium plugs
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This is a discussion on iridium plugs within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; how much for these plugs and where do i find them ,.....how much hp do you get...

  1. #1
    Registered User racerWRX's Avatar
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    iridium plugs

    how much for these plugs and where do i find them ,.....how much hp do you get
    have you ever been 4 bagged ???

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  3. #2
    God
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    I wouldn't waste your money. I measured no power gains when I dyno tested them on a full out street Honda motor. On top of that I have experienced breakage problems, so I just use platinum plugs now exclusively. Work like a charm, no problems. BTW, your stock ones are platinum so don't bother changing them unless you're running high boost ona big turbo.
    Daniel Ponze, Lead Tuner Tuning Factory, Inc.
    PH: (248) 477-0700___FX: (248) 477-0701

  4. #3
    str
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    i bought them for about $40 on ebay but after talking to people here I have decided to not install them.
    2004 Black Forester XT

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    Registered User racerWRX's Avatar
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    if im not mistaken arent there a set in the vishnu stage 0 kit.....the reason im asking is the whole warranty issue.....i want to mod but the last thing i need is to fight the soa.....just have the axel back from prodrive, might go vishnu...who knows....i would like up/dn pipe from godspeed......but time & $$$$ are the issues.....maybe ebc ??????
    have you ever been 4 bagged ???

  6. #5
    Registered User pace's Avatar
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    They seem to be snake oil. Go with Copper, or with Platinum if longevity is a concern.

    NGK Platinum, one colder than stock: BKR7EVX
    NGK Platinum, one colder than stock. Expensive OE-type plug: PFR7G
    NGK Copper, one colder than stock: BKR7E (I run these)

    -Pace

  7. #6
    cnk
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    The Vishnu kit comes with NGK 2387 BKR7ES-11 spark plugs that are 1 stage colder than stock.

    Calvin

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    tan
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    Toyota uses iridium plugs in many of the cars & trucks sold in the US.

    There goes the..."if iridiums are so good, why don't car manufacturers use them" argument

  9. #8
    Registered User pace's Avatar
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    Originally posted by cnk
    The Vishnu kit comes with NGK 2387 BKR7ES-11 spark plugs that are 1 stage colder than stock.

    Calvin
    It should go without saying, but make sure to gap any new plugs you purchase. The -11 designation specs a factory gap that is much, much wider than OE spec.

    -Pace

  10. #9
    Registered User is2scooby's Avatar
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    Originally posted by tan
    Toyota uses iridium plugs in many of the cars & trucks sold in the US.

    There goes the..."if iridiums are so good, why don't car manufacturers use them" argument
    My '01 IS300 came stock with Iridium plugs...

    Aloha,
    Richard...

  11. #10
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    Ditto with a Honda CBR600f4i. Thank god for the NGK spnsorship. At $12 a piece, i'm glad I'm not paying for them. I have noticed too that they are just as suceptible to fouling as regular plugs.


    Alin

  12. #11
    tan
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    Craig Paisely's Supra uses HKS (Denso manufactured) Iridium plugs. Luckily for his sponsorship

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    i just ran across this post...

    i checked with monarch to see how much the ngks are, they seem to be selling them for $1.99 on there website

    check it out here enter 2387 for Product Number.

    -hoops

  14. #13
    Registered User bunot's Avatar
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    from what i know, the iridiums won't do much unless you have upgraded performance parts. like more boost, fuel, etc. with a UTEC, where you can mess with the timing, the iridiums will really help (as i was told).

    i currently have the Denso iridiums and have noticed nothing significant, but then again, i haven't dynoed my car nor have i added much of anything except for an MBC.

    i got mine for $30 from someone in the i-club. it was never used.

    jason

  15. #14
    Registered User 02WRX82's Avatar
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    actually, i got the ngk iridiums and noticed that the drop off i had after 5,000 rpms was dramatically reduced and it pulls harder at higher speeds. Just to give a testimonial for you guys.

  16. #15
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    since we're talking about spark plugs...

    are the plugs easily accessible in the wrx or are they a pain to install?

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