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Cat Converters/3.4 Underbody pictures please!

Discussion in '1st Gen. Tacomas (1995-2004)' started by DblCabMN, Jul 25, 2011.

  1. Jul 25, 2011 at 11:33 AM
    #1
    DblCabMN

    DblCabMN [OP] Well-Known Member

    Joined:
    Mar 22, 2011
    Member:
    #53498
    Messages:
    693
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    Male
    Mpls, Minnesota
    Vehicle:
    03 DC TRD/LTD
    Bilstein 5100's all around - Toytec/Eibach 112-620 Coils, Wheelers 5-Pack+Wheelers 2"AAL. 33x10.5x15 KM2s - Siped on Summit Racing 84-5883 rims with 3.750 BS. 4.88s. Demello HD round sliders. Home built full skids. Home built front bumper. Plasti'd badges. Energy Susp. steering rack bushings. Sway bar delete. Deck plate mod. aFe Pro-Dry. Gibson exhaust.
    Hey all,

    I have a 2003 DC 5VZ-FE and i was juuuust about to purchase new cats to get rid of my shot stock ones that keep throwing codes etc.

    I'm going to be replacing them with an Eastern Catalytic EAST40364 up front and a weld-in 2.25 in/out universal with o2 port from either Eastern or Walker.

    But then i ran outside and looked underneath my truck and the stock photos from each manufacturers websites look like they won't work and their bolt-ons have an o2 sensor built in... if i went with their bolt on, i'd have 3 o2 ports... but I can't tell if my exhaust is completely stock or not as the o2 sensor is after the rear Cat's flange, on the regular pipe that runs to the muffler...

    This is all just throwing me for a loop. I've emailed both companies this morning but haven't heard back yet.

    Basically, i'm looking for a couple other 1st gen DC's with 'stock' exhausts/cats to post up a pic of your front and rear cats all the way back to the muffler...

    Looks like i can just cut out the old rear cat and weld in a new one and reuse the rear o2 bung on the pipe to the muffler.

    [​IMG]
    [​IMG]
     
  2. Jul 25, 2011 at 12:29 PM
    #2
    bicklebok

    bicklebok Well-Known Member

    Joined:
    May 24, 2011
    Member:
    #57154
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    Ronnie
    Montgomery, AL
    Vehicle:
    2000 Xtra Cab 4x4 SR5
    Sorry I cant help you with the pics, but you know your cats are bad? Did you replace the 02 sensors and still had a CEL?
     
  3. Jul 25, 2011 at 4:12 PM
    #3
    DblCabMN

    DblCabMN [OP] Well-Known Member

    Joined:
    Mar 22, 2011
    Member:
    #53498
    Messages:
    693
    Gender:
    Male
    Mpls, Minnesota
    Vehicle:
    03 DC TRD/LTD
    Bilstein 5100's all around - Toytec/Eibach 112-620 Coils, Wheelers 5-Pack+Wheelers 2"AAL. 33x10.5x15 KM2s - Siped on Summit Racing 84-5883 rims with 3.750 BS. 4.88s. Demello HD round sliders. Home built full skids. Home built front bumper. Plasti'd badges. Energy Susp. steering rack bushings. Sway bar delete. Deck plate mod. aFe Pro-Dry. Gibson exhaust.
    to my knowledge they have 104k miles on 'em and... when i bought the truck the p0420 popped up. (125 miles from the dealer... i know right?)This is followed by the p0135 and p0136(or whatever the failing rear o2 and 'no rear-o2 voltage' is) and now it just gets the p0135.

    I do have the new front and rear o2 + URD sim waiting to install... i'm mostly assuming they're shot as an excuse to buy high-flow cats that I 'know' are good.

    My taco has very little get up and go as is. Seems like it's bogging, etc. i do realize buying new cats could be a potential waste, but since i've got to get up in there to replace the ~$150 worth of o2 sensors, i figure i'd just drop the extra couple hundo to get everything buttoned up so i don't have to worry about it for quite some time. i also cleaned the entire intake track incl. the MAF and did the deckplate mod... with hardly any change.

    It would suck if the stock cats are still good, but i'm really leaning towards them not being.

    *edit* also, my exhaust smells like they're shot...
     
  4. Jul 25, 2011 at 4:16 PM
    #4
    fireturk41

    fireturk41 I like to break shit!

    Joined:
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    Kevin
    High Point, NC
    Vehicle:
    280k miles
    SAS, Locked front rear, Ufab sliders and bumpers, air compressor, 35" BFG KM2 on steelies and 36" TSLs
    sent em to me, ill scrap em for ya
     
  5. Jul 25, 2011 at 4:18 PM
    #5
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
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    Ben
    Beech Creek
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    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    The rear O2 is in the right spot. Direct fit rears don't have sensor bongs.
     
  6. Jul 25, 2011 at 4:55 PM
    #6
    MowTaco

    MowTaco Well-Known Member

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    Matt
    South Dakota
    Vehicle:
    03 GMC Sierra
    Hehe... you said bong
     
  7. Jul 25, 2011 at 4:58 PM
    #7
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
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    Messages:
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    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    I was chuckling when I posted it.
     
  8. Jul 25, 2011 at 5:06 PM
    #8
    RAT PRODUCTS

    RAT PRODUCTS RAT Products

    Joined:
    Apr 12, 2010
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    13,770
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    First Name:
    Ryan
    Farmington, MN
    Vehicle:
    01 CUMTOY and 16 Sierra Denali
    View the build. Too much to list.
    Cats look stock. High flow cats will throw the same codes. They don't filter enough. But that's where the urd sim comes in.
     
  9. Jul 25, 2011 at 5:51 PM
    #9
    DblCabMN

    DblCabMN [OP] Well-Known Member

    Joined:
    Mar 22, 2011
    Member:
    #53498
    Messages:
    693
    Gender:
    Male
    Mpls, Minnesota
    Vehicle:
    03 DC TRD/LTD
    Bilstein 5100's all around - Toytec/Eibach 112-620 Coils, Wheelers 5-Pack+Wheelers 2"AAL. 33x10.5x15 KM2s - Siped on Summit Racing 84-5883 rims with 3.750 BS. 4.88s. Demello HD round sliders. Home built full skids. Home built front bumper. Plasti'd badges. Energy Susp. steering rack bushings. Sway bar delete. Deck plate mod. aFe Pro-Dry. Gibson exhaust.
    Thanks everyone, yeah that's whats throwing me for a loop, all the rear bolt ons i find state they have a spot for the rear o2.
     
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