straight pipe exhaust

Discussion in 'Emissions' started by 87gunsnroses, Feb 16, 2013.

  1. 87gunsnroses

    87gunsnroses New Member

    Who else is running straight pipe exhaust? Kooks long tubes with full 3 inch exhaust no cats or muffler.:stickshift:
  2. ILAveo

    ILAveo Well-Known Member

    Aside from being illegal, it seems like you'd probably want to reprogram your ECM because your exhaust sensor data is gonna be odd and maybe throw your ECM into open loop or maybe the ECM will just get mix/timing wrong.
  3. herm

    herm Well-Known Member

    It will be so loud that you will back off the throttle faster, saving gas.. you are a hypermiler!
  4. Welcome to the forum?
  5. RedylC94

    RedylC94 Well-Known Member

    A full 3-centimeter exhaust works for me, and has taken me a lot farther than you'll ever go with that 3-inch.
  6. Rackster

    Rackster Well-Known Member

    Could be a heavy fine w/o the cats in place.

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