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how 2 kinda cheat a emission test

Discussion in 'General Tech and Maintenance' started by triniDEMON, Jun 11, 2005.

  1. triniDEMON

    triniDEMON Member

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    my car failed HC AND CO BUT passed nox
    all i did was advanced the timing a little and it passed everything with flying colours
    (however i scoped my o2 sensor and it was a lazy bitch}
    last 2 yrs ago it failed hc and co and it turned out 2 b the fuel regulator (leaks sending fuel into the intake under a bit of load}
     
  2. driverunknown

    driverunknown Senior Member

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    Actually you retarded the timing ;)
     
  3. SiLude

    SiLude Senior Member

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    i know someone who passed with a swaped motor and no muffler, dont ask me how he did it though.
     
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