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cat delete

  1. Go Fast Stuff
    So after installing Catless Headers i was wondering if a tune is required after to make the car run better or get rid of the check engine light? just wanting to know before i go catless with DNA Catless headers with a megan Racing Y pipe.
  2. General Discussion
    i recently got my is300 and want to hollow out 1 out of the three catalytic converters. will i be able to pass emissions during smog in california?