Has anyone gotten 24v swapped though DEQ with out cat?

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  • FireFight
    E30 Fanatic
    • Mar 2012
    • 1367

    #1

    Has anyone gotten 24v swapped though DEQ with out cat?

    Finished the swap but I hate my exhaust, thinking of building a whole set up soon, but thinking about not running a cat, anyone ran with out and pass deq? this car just passed, and its a 318i using a old 325e cat with a m50b25tu, no problems
    WTB:m60b40 in PNW
    Zachary Ripley

    85 318i M50B25tu.
    92 525it 5 speed.
    80 244gl (m60 prepping).

  • Matt-B
    The Waffler
    • Jun 2009
    • 3856

    #2
    install 1, then have it removed later, although you need to do it yourself, no shop will do exhaust without adding 1


    Please leave feedback below, thanks

    http://www.r3vlimited.com/board/showthread.php?t=358170

    Comment

    • e30davie
      E30 Mastermind
      • Apr 2016
      • 1788

      #3
      Leave the cat in....my car is an 85' and in Australia we don't need cats pre-87' i think (never came with one new), i've got a wideband and the AFRs are good but the exhaust just stinks. I'm putting a cat in......

      No real benefit to not having one.

      Comment

      • BigBillions
        Advanced Member
        • Oct 2011
        • 123

        #4
        deq

        i have the m50tu and a punched out cat and it passed emission.
        here's a neat fact if the motor is running right it should be able to pass emissions with out a cat that's if the motor is in proper working order.

        Comment

        • FireFight
          E30 Fanatic
          • Mar 2012
          • 1367

          #5
          Originally posted by BigBillions
          i have the m50tu and a punched out cat and it passed emission.
          here's a neat fact if the motor is running right it should be able to pass emissions with out a cat that's if the motor is in proper working order.
          That's what I figured, thanks
          WTB:m60b40 in PNW
          Zachary Ripley

          85 318i M50B25tu.
          92 525it 5 speed.
          80 244gl (m60 prepping).

          Comment

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