Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #1
    Join Date
    Apr 2011
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    Northern Virginia
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    High flow Catalytic Converter options

    Hello all, I need help determining which catalytic converters to buy, as well as where to install them. I have aftermarket headers w/ no catalytic converters. I want to place them somewhere on the exhaust, was thinking about cutting out the initial resonator and placing them there?

    Thanks!
    2004 330i Jet Black zhp
    :AA stage 1 supercharger:-:BimmerBrake Headers:-:UUC lightweight flywheel/organic clutch:-: VMR v710:-:more to come
    Merhaba

  2. #2
    Join Date
    Aug 2011
    Location
    The Windy City
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    magnaflow seems like the best idea
    Call me Seth
    CURRENT: 2016 Long Beach Blue BMW /// M2
    RETIRED: ‘15 F22 M235i | '08 E90 M3 DCT "GoinHAM3" | '04 E46 M3 6MT "WEGOHAM"
    '04 330i ZHP | '11 E82 135i | '08 E90 328xi | 07 E91 328xi SportWagon

    Quote Originally Posted by danewilson77 View Post
    If I wore panties, I'd be dropping them right now.

  3. #3
    Join Date
    Apr 2011
    Location
    Northern Virginia
    Posts
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    Quote Originally Posted by UdubBadger View Post
    magnaflow seems like the best idea
    http://www.jegs.com/p/Magnaflow/Magn...50982/10002/-1


    Yeaaaaaa... lol

    2.25" is the size right?
    2004 330i Jet Black zhp
    :AA stage 1 supercharger:-:BimmerBrake Headers:-:UUC lightweight flywheel/organic clutch:-: VMR v710:-:more to come
    Merhaba

  4. #4
    Join Date
    Aug 2011
    Location
    The Windy City
    Posts
    9,155
    Call me Seth
    CURRENT: 2016 Long Beach Blue BMW /// M2
    RETIRED: ‘15 F22 M235i | '08 E90 M3 DCT "GoinHAM3" | '04 E46 M3 6MT "WEGOHAM"
    '04 330i ZHP | '11 E82 135i | '08 E90 328xi | 07 E91 328xi SportWagon

    Quote Originally Posted by danewilson77 View Post
    If I wore panties, I'd be dropping them right now.

  5. #5
    Join Date
    Sep 2011
    Location
    San Francisco, CA
    Posts
    6,847
    it is illegal to move catalytic convertors or reposition O2 sensors.

  6. #6
    Join Date
    Aug 2011
    Location
    The Windy City
    Posts
    9,155
    hmmm ok so running catless isn't illegal or what do you mean? I would assume running catless, running relocated cats or welding in a cats are all the same thing, correct?
    Call me Seth
    CURRENT: 2016 Long Beach Blue BMW /// M2
    RETIRED: ‘15 F22 M235i | '08 E90 M3 DCT "GoinHAM3" | '04 E46 M3 6MT "WEGOHAM"
    '04 330i ZHP | '11 E82 135i | '08 E90 328xi | 07 E91 328xi SportWagon

    Quote Originally Posted by danewilson77 View Post
    If I wore panties, I'd be dropping them right now.

  7. #7
    Join Date
    Sep 2011
    Location
    San Francisco, CA
    Posts
    6,847
    welding in cats in the same location is probably okay as long as the cats are the correct cells. I do not know the laws in your specific state but I live in California the Smog Tyrants State.

  8. #8
    Join Date
    Aug 2011
    Location
    The Windy City
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    yeah I know... IL is pretty strict too but they don't do visual inspection unless you don't pass the test.
    Call me Seth
    CURRENT: 2016 Long Beach Blue BMW /// M2
    RETIRED: ‘15 F22 M235i | '08 E90 M3 DCT "GoinHAM3" | '04 E46 M3 6MT "WEGOHAM"
    '04 330i ZHP | '11 E82 135i | '08 E90 328xi | 07 E91 328xi SportWagon

    Quote Originally Posted by danewilson77 View Post
    If I wore panties, I'd be dropping them right now.

  9. #9
    Join Date
    Apr 2011
    Location
    Northern Virginia
    Posts
    40
    Quote Originally Posted by UdubBadger View Post
    That's very expensive! D: I wouldn't be able to afford that for a few weeks!

    My car is registered in Winchester Virginia, they only do visual inspections out there, I will have find out if it is legal to relocate the cats or not, I hope it is
    2004 330i Jet Black zhp
    :AA stage 1 supercharger:-:BimmerBrake Headers:-:UUC lightweight flywheel/organic clutch:-: VMR v710:-:more to come
    Merhaba

  10. #10
    Join Date
    Aug 2011
    Location
    The Windy City
    Posts
    9,155
    yeah it is so probably best to go with one of the 1st ones and weld it in.
    Call me Seth
    CURRENT: 2016 Long Beach Blue BMW /// M2
    RETIRED: ‘15 F22 M235i | '08 E90 M3 DCT "GoinHAM3" | '04 E46 M3 6MT "WEGOHAM"
    '04 330i ZHP | '11 E82 135i | '08 E90 328xi | 07 E91 328xi SportWagon

    Quote Originally Posted by danewilson77 View Post
    If I wore panties, I'd be dropping them right now.

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