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Thread: Iridium spark plugs???

  1. #1
    Inactive Member nicherw's Avatar
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    Anybody used these new iridium spark plugs out. Supposedly makes 5whp for s/c or turbo applications. Don't know if I should spend $60 on plugs that might not do anything.

  2. #2
    Senior Hostboard Member JRCivic's Avatar
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    I have some on the way... I should get them on Friday. I will be checking them out when I get back in town.

    I will keep you guys posted.

    Jim


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    '93 Civic Si H/B with B18C1, JRSC @ 8psi
    Best 1320: 12.68 at 110 mph

  3. #3
    Inactive Member Mr Rogers's Avatar
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    I have them in my car and I don't have any hard numbers or anything but my car does feel really strong even with my leaking header (DC 4-2-1 onepiece is on the way). I have them gapped to .045 (almost a full milimeter more then JR recommended copper plug gap) and have no problems with misfiring at all. I am running stock ignition and a Nology ignition amplifier. Order them from Monarch unless Jim can get you a better deal (He usually comes through if he can). I did keep my VX's (hi-po NGK plats.) So that one day when I make it to a dyno I can do a baseline with the VX's and then the Iridiums.

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    98 GS-scR w/ 8psi JRSC, Walbro HO fuel pump, AEM cai, Airmass header, Thermal Exhaust, Skunk Works cam gears, J&S safeguard, RC 310's, Cartech FMU, Vortech regulator, H&R sports and KYB AGX's, and of course to slow down, KVR X-drill F&R rotors and Carbon Kevlar pads and V1 to signal the slowing down and soon to go on a Carbon Fiber diet.

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    Inactive Member lundgren's Avatar
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