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Thread: Spark plug ?

  1. #1
    a3ritter is offline Cadillac Owners Member
    Automobile(s): 05 CTS-V
    Join Date
    Jun 2010
    Location
    Royal Oak, MI
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    33

    Spark plug ?

    I am planning to replace my plugs while having some work done to my car. I know a lot of you guys run some NGKs, but I was told they are best on forced induction applications and with my setup, replacement AC Delcos are the most appropriate. With the following mods which plugs would you guys recommend: cam, headers/ full exhaust, CAI, p&p tb, tune.


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  3. #2
    darkman's Avatar
    darkman is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V
    Join Date
    Nov 2005
    Location
    Spring, Texas
    Posts
    8,208

    Re: Spark plug ?

    I would run one step colder than stock. Options include AC Delco 12571165, Bosch 4505, or NGKTR61X.

  4. #3
    uwood's Avatar
    uwood is offline Cadillac Owners Fanatic
    Automobile(s): 2007 Escalade
    Join Date
    Sep 2007
    Location
    Morton, Illinois, United State
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    317
    NGK 1 step colder here. All I ever run.

  5. #4
    lollygagger8's Avatar
    lollygagger8 is offline Cadillac Owners Connoisseur
    Automobile(s): Platinum 2004 CTS-V
    Join Date
    Apr 2008
    Location
    Indiana
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    4,913

    Re: Spark plug ?

    Quote Originally Posted by darkman View Post
    I would run one step colder than stock. Options include AC Delco 12571165
    x 2 on this


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