STS-V questions
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Cadillac STS-V Series Forum Discussion, STS-V questions in Cadillac V-Series Forums; I just recently got my car where I want it to be. Man I love this car. So much fun ...
  1. #1
    cucol2009 is offline Cadillac Owners Member
    Automobile(s): 2006 Cadillac STS-V
    Join Date
    Mar 2011
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    STS-V questions

    I just recently got my car where I want it to be. Man I love this car. So much fun to drive!

    My current mods:

    Stage 1 and 2 spectre intake (Love that supercharger sound)

    GM Borla cat back exhaust

    A engine and tranny tune thanks to a fellow STS-V owner on this site. Thanks again for that

    My questions and seeking advice:

    What spark plugs should I put in and what gap?

    I have a bad Cat on the driver side, should I hollow out both cats or replace the bad one?

    Any other advice or comments are also welcome.

    Thanks

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  3. #2
    cucol2009 is offline Cadillac Owners Member
    Automobile(s): 2006 Cadillac STS-V
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    Thread Starter
    In Doing some research I'm trying to decide between 3 spark plugs.
    NGK TR6, NGK TR7, or Torque Master. Anyone use Torque Master before?

  4. #3
    Dave G is offline Cadillac Owners Fanatic
    Automobile(s): STS-V
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    Re: STS-V questions

    I've never used Torque Master. I've had good luck with NGK plugs in nearly every other application - it's my preferred plug. The 7 will be a 'colder' spark than the 6. Either way between the 6 or 7.

  5. #4
    CMNTMXR57 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 STS-V, 2004 Pontiac GTO, 1999 Chevrolet Suburban LT 4x4
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    Re: STS-V questions

    TR7IX (stock# 3690), is the OEM equivalent replacement.

    .040 gap

  6. #5
    Dave G is offline Cadillac Owners Fanatic
    Automobile(s): STS-V
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    Re: STS-V questions

    The IX will be an iridium plug. More money with little benefit.

  7. #6
    CMNTMXR57 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 STS-V, 2004 Pontiac GTO, 1999 Chevrolet Suburban LT 4x4
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    Re: STS-V questions

    Depends on what you consider "little benefit"...

    Some consider not having to replace their plugs in another 40k because they went with a harder core metal, which resists wear and denigration, a substantial benefit.

    I typically also go with a softer core (in this case a regular TR7), for performance reasons, but on this car, I don't want to be constantly having to R&R plugs.

  8. #7
    Dave G is offline Cadillac Owners Fanatic
    Automobile(s): STS-V
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    Re: STS-V questions

    I don't ever keep cars long enough to change plugs more than once.

  9. #8
    CMNTMXR57 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 STS-V, 2004 Pontiac GTO, 1999 Chevrolet Suburban LT 4x4
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    Re: STS-V questions

    My Wife would probably agree with you on that point, that I am the same...

  10. #9
    cucol2009 is offline Cadillac Owners Member
    Automobile(s): 2006 Cadillac STS-V
    Join Date
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    Thread Starter
    Thanks for all the input. I think I'm gonna do the TR7 plugs. Inexpensive And I always try to change plugs at the 50k mark anyway

  11. #10
    CMNTMXR57 is offline Cadillac Owners Enthusiast
    Automobile(s): 2006 STS-V, 2004 Pontiac GTO, 1999 Chevrolet Suburban LT 4x4
    Join Date
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    Re: STS-V questions

    And they're not really to difficult to change.

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