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stock exhaust

Discussion in '3sge' started by mephtar, Dec 16, 2007.

  1. mephtar

    mephtar Well-Known Member

    What are all the stock components of a North American GTS exhaust? are there normally 2 cats or 1. Im just wondering because Ive always thought there was just 1 cat after the flex pipe, but with the option to buy a downpipe, don't they usually replace a cat?
  2. MITT4G

    MITT4G Well-Known Member

    Exhaust Mani > Downpipe > Flexpipe > Cat > Midpipe > Muffler - And 2- 02 Sensors. 7-8 Rubber dounuts.

    Replacing the Cat is optional, In California we have the worst Emissons law- It is very common to replace the Cat when doing any muffler replacement. If your wanting to replace the Cat just stick with an A/M setup.
  3. mephtar

    mephtar Well-Known Member

    two o2 sensors? wasnt it one o2 on the manifold prefacelift or one o2 sensor on the down pipe post?
  4. JoeJack88

    JoeJack88 Well-Known Member Super Moderator Donated!

    my 88 3sge is in the down pipe,
    and 86-87 `s are on or right below the main iirc

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