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LM1 CARB Legal?

This is a discussion on LM1 CARB Legal? within the General Help forums, part of the LSx Technical Help Section category; Just curious is the LM1 exhaust system legal in California? If not whats cat backs are legal here in Cali? ...

  1. #1
    Ryan RByers91's Avatar
    Join Date
    Nov 2008

    Artic White
    2002 Trans Am WS6 Vert.

    LM1 CARB Legal?

    Just curious is the LM1 exhaust system legal in California? If not whats cat backs are legal here in Cali? Any help would be appreciated!


  2. #2
    Senior Member bigrondownhiller's Avatar
    Join Date
    Feb 2006
    Westchester, NY

    1996 Camaro Z28 vert

    It might be too loud that is all. Some places are harder on people with loud cars. You need to see if there is any noice ordinances in your town and what the limits are.

  3. #3
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    doylestown, Pa

    2004 CTS-V

    The exhaust system is a cat-back which should not have anything to do with emissions.

  4. #4
    Retired NOT tired SteveC's Avatar
    Join Date
    Jul 2005
    Poway, Ca

    2001 Z28 (Sara)

    All catbacks are legal in California, for they are installed back of the cats, which can not be moved from the factory location.

    Now if the system is noise legal is another story. The old law stated that the system had to be < 75 db, the officer would test your system using a db meter, then issue the ticket if warented, California most recently changed the law that says "All the officer has to do is think the system is to loud", and then he can issue the ticket. You would then have to go to a state run facility to prove them wrong.

    Another example of giving too much leverage to the already "impaired morons" in uniform.


    Last edited by SteveC; 11-18-2008 at 04:01 AM.

  5. #5
    Veteran 0rion's Avatar
    Join Date
    Aug 2005

    98 Formula
    06 duramax

    the LM1 will be too loud.

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