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colder spark plugs

This is a discussion on colder spark plugs within the General Help forums, part of the LSx Technical Help Section category; Why do racers change to colder plugs when running at the strip?...

  1. #1
    Member Z ROADSTER's Avatar
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    PEWTER
    2002 Z/28 VERT.

    colder spark plugs

    Why do racers change to colder plugs when running at the strip?

  2. #2
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    Black
    1993 3000GT VR-4

    I know for forced induction it keeps knocking and pre-ignition down when running high compresion ratio or boost. This is especially usefull when you are beating on the car.

    I currently run 2 stages cooler. 3 stages causes my car to foul them out too easily because my tune is too rich.

  3. #3
    Member jperkins812's Avatar
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    When you spray nitrous oxide you need to step down in heat ranges to help with keeping detination down. My last car I nitrous on was a 97 eclipse (I no longer own) and I ran two stages colder than stock because I was spraying anyway from 50 to 75 horsepower through that poor little 4cyl.

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