Thread: Spark plug for our L36?!

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  1. #1 Re: Spark plug for our L36?! 
    I live here. Slick2500's Avatar
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    But yeah if your car is stock run the XP606s, all your gonna do with the 605s is kill your gas mileage. I don't remember who it was that said it but you want to run the hottest plug you can not the coldest.
    2003 Redfire Metallic Chevy Tahoe Z71 - Airaid Modular Intake Tube, Flowmaster Exhaust.
    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  2. #2 Re: Spark plug for our L36?! 
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    The only mods are alt/fuse box rewire, fuel pump rewire, oversized radiator, 180* thermostat, under drive alt and water pump pulley, zzp headers, tog catless dp, and a slightly modded tune (I'm just learning).

    Im pretty sure I put plats in now that I'm thinking about it. :-(
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  3. #3 Re: Spark plug for our L36?! 
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    I'm scanning and finding roughly 1-2* KR during shifts. The big numbers come in at 50%+ throttle position in 2nd and 3rd gear around 2500-4500. I'm getting 5-9* but I let off before I see how far it goes.
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