1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Exhaust Replacement Advice

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Grenade187, Feb 18, 2014.

  1. Feb 18, 2014 at 7:06 PM
    #1
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    Hi there, just joined TW. Been creeping threads and researching for months though, just bought my first tacoma in July - used 07 TRD Sport with the 1GR-FE. Miles were a bit high (176,000 km) but the truck is in great shape, engine is clean, runs smooth. Basically everything works as it should except I noticed pretty quick it sounded like it had an exhaust leak. Started doing research and find out I'm not the only one who's encountered this..

    Anyway, looking to replace the whole exhaust system. Most people seem to go headers, but unfortunately I live in Vancouver and we have to comply with emissions, so I must run cats. Thought about shorty headers to cats, but it just seems like too much of a pain, bunch of welding and fitting involved. So I've been looking at these Magnaflow large stainless replacement manifolds instead:

    http://www.summitracing.com/int/parts/mpe-49341/overview/

    Basically come with integrated cats, just like the stock ones, but are definitely made from better, thicker materials and would give more flow, I think. They're a little expensive, but I can offset some of the cost by taking the stock cats in for scrap.

    Anyone tried these? Or have other suggestions on which way I should go? Thanks in advance.

    mpe-49341_fi_ml.jpg
     
    Last edited: Feb 18, 2014
  2. Feb 18, 2014 at 7:10 PM
    #2
    TRDtexasTaco

    TRDtexasTaco Well-Known Member

    Joined:
    Oct 11, 2012
    Member:
    #88770
    Messages:
    487
    Gender:
    Male
    First Name:
    JP
    Sunnyvale Trailer Park
    Vehicle:
    06 TRD PreRunner
    Billy shocks, Maxtrac spindels, AllPro standard leafs, BAMF shock relocation, King 2.5 smoothies
    subd I got one them there leaks to myself. Welcome to TW :wave:
     
    Last edited: Feb 18, 2014
  3. Feb 19, 2014 at 3:32 AM
    #3
    scottw1

    scottw1 Well-Known Member

    Joined:
    Jan 7, 2013
    Member:
    #94652
    Messages:
    384
    Gender:
    Male
    First Name:
    Scott
    Norfolk, VA
    Vehicle:
    2010 SR5 Tacoma 4x4
    Lighted 4wd dial, Sirus XM radio
    Is there a reason you don't want to replace w/ stock? $509 seems kind of high for a cat, you still have to get the rest of the exhaust replaced.
     
  4. Feb 19, 2014 at 3:46 AM
    #4
    FATaco

    FATaco Meh

    Joined:
    Dec 6, 2010
    Member:
    #47239
    Messages:
    295
    Gender:
    Male
    First Name:
    Friends call me Ginger
    Fairbanks
    Vehicle:
    07' TRD DCSB
    Dakars w/AAL, OME/886's, All Pro Front Bumper, Rear bumper, IFS skid, and UCA's. Superwinch Tigershark. Magnaflow muffler... vrooom
    Looks like a good option since you don't want to mess with the welding and such. The TRD exhaust is already mandrel bent from the factory after the rear cats so all you really need is a muffler to complete your exhaust after installing these magnaflows. If you have to keep all four cats then trying to replace the Y pipe with a madrel bent one really isn't going to do much for you and probably isn't worth the cost.
     
  5. Feb 19, 2014 at 5:36 AM
    #5
    TacoRob08

    TacoRob08 Well-Known Member

    Joined:
    Dec 8, 2013
    Member:
    #118147
    Messages:
    206
    Gender:
    Male
    First Name:
    Rob
    Fredericton, NB, Canada
    Vehicle:
    17 Sport DCLB
    AFE high tuck exhaust, OVTuned base 91
  6. Feb 19, 2014 at 5:43 AM
    #6
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    Thanks for the replies! I don't want to replace with stock, because toyota obviously doesn't use good manifolds. My stock ones leak, and sound like sh*t, and the whole exhaust is rusty from the engine to the tailpipe (not killer rust, no holes or anything- yet). I do most of my own work, and I hate doing things twice.

    So, I can't seem to find too much info on the rear cats - are they inside the y-pipe? Because I haven't seen a 2nd set of cats on my truck. Did they only start putting those on the later years? Do they have a 2nd set of O2 sensors too? Replacement y-pipe seems to be the hardest thing to find. The only aftermarket ones are Doug Thorley's and they want alot for them.
     
  7. Feb 19, 2014 at 5:45 AM
    #7
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
  8. Feb 19, 2014 at 6:10 AM
    #8
    Vassily28

    Vassily28 Well-Known Member

    Joined:
    Nov 24, 2011
    Member:
    #67629
    Messages:
    423
    Gender:
    Male
    Quebec, Quebec, Canada
    Vehicle:
    11 TRD SPORT 4x4 Quadcab LB
    TRD supercharger with 2.85" URD stealth pulley and OEM FPR mod. URD fuel pump upgrade, URD TB plate adapter 70mm, FJ/4 runner 70 mm Throttle body, URD exhaust cam gears URD performance thermostat TRD CAI 1st gen. with custom cover (coupe), ProDry S + Filter skin, Doug thorley long tube headers, URD spec U exhaust Icon LT 2.5 front coilover, Timbren front bumpstops, Total Choas UCA, Deaver custom leafpack 3 inch. lift, Icon 2.5 VS series rear resishocks, Timbren rear bumpstops, ARB front bumper with WARN 8500 lbs winch,Hella 500 blackmagic, AVID rear bumper, Allpro front IFS skid + Trans. skid + Transfercase skid. Total chaos LCA skid, SS braided brake line, URD O2 sims, URD MAF controller, Wetokole front seatcovers, Innovate MTX-L, MTX-D AFR and boost gage.
    The DT Y-pipe is not expansive! Mostly cause of the steel material instead of SS.

    Have you done research about the smog test. How are the regulations in Vancouver compared to California? This truck is legal California and i'm preety sure there is a way to pass the test only with 2 cats.

    The second bank of cats are on the Y-pipe, let say Under the driver and passenger seat.
     
  9. Feb 19, 2014 at 6:44 AM
    #9
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    Yea, I see what you're talking about now. Vancouver emissions testing is pretty lax, actually. if your vehicle is 97 or newer, they don't even hook you up to a sniffer, just plug into your dash and make sure all on board emission controls are functioning.. but we are required by law to run cats. I'm sure I could pass without the second set.. no sensors downstream from the y-pipe cats, correct?
     
  10. Feb 19, 2014 at 7:38 AM
    #10
    CowboyTaco

    CowboyTaco $20 is $20

    Joined:
    Aug 19, 2010
    Member:
    #41928
    Messages:
    4,936
    Gender:
    Male
    North Georgia
    Vehicle:
    11 TRD Sport
    Not to mention that is the price each. The OP is looking at $1010 and then the rest of the exhaust. That seems pricey to me.

    Except for they are "race only" which means you likely will not pass emissions, which is something you indicated a need for originally.


    Why not get the Shorty Headers (http://www.amazon.com/Doug-Thorley-Headers-thy-515-1-c-4Runner/dp/B007NJXXOG) and then get an exhaust shop to install. I've read people on here paying between $180 and $250 (US) to get all the work done. You get to keep the cats, but also get the benefit of headers and replace the stock manifold. All that for less than the other two products that have been mentioned here.
     
  11. Feb 19, 2014 at 9:19 AM
    #11
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    Yea I've considered the shorty headers, but if I went that way, $350 for the headers, with shipping/import fees they'll be up around 500. add stainless cats at 150 a piece, then Labour, plus stainless exhaust flanges, plus I'd have to drop my only vehicle off for a day or two to get it done, leaving me no way to get to work. All to save maybe 100-200 bucks? and as far as I know, the longer the tube, the better the performance, so I'd argue that the performance advantage of short tube headers over a large, high flow manifold would be negligible.

    at this point I'm still leaning towards the magnaflow manifolds.. still some research to do before I pull the trigger on anything, and I always like to hear what people think.

    As far as these "secondary cats" - are you sure they're actually cats and not just resonators?
     
  12. Feb 19, 2014 at 9:32 AM
    #12
    FATaco

    FATaco Meh

    Joined:
    Dec 6, 2010
    Member:
    #47239
    Messages:
    295
    Gender:
    Male
    First Name:
    Friends call me Ginger
    Fairbanks
    Vehicle:
    07' TRD DCSB
    Dakars w/AAL, OME/886's, All Pro Front Bumper, Rear bumper, IFS skid, and UCA's. Superwinch Tigershark. Magnaflow muffler... vrooom
    Just a heads up, Amazon appears to sell the Magnaflows as well. The same part # is about $60 a piece cheaper. They also show another part # that says it's compatible with our trucks for under $400 a piece.
     
  13. Feb 19, 2014 at 10:22 AM
    #13
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    Yea, thanks, I saw those on there, unfortunately they won't ship to Canada.. :(

    autopartswarehouse has a Canadian site and charges no brokerage fees, so I think it'll be the best option.. Canadians get hosed on car parts.
     
    Mr x 1979 likes this.
  14. Feb 19, 2014 at 10:57 AM
    #14
    CowboyTaco

    CowboyTaco $20 is $20

    Joined:
    Aug 19, 2010
    Member:
    #41928
    Messages:
    4,936
    Gender:
    Male
    North Georgia
    Vehicle:
    11 TRD Sport
    It's my understanding that the long tube headers provide gains in the high RPM range, whereas the short tube headers provide gains in the low RPM ranges.
     
  15. Feb 19, 2014 at 12:25 PM
    #15
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    makes sense. I still don't think there would be significant advantages to running the shorty headers over those magnaflows though.
     
  16. Feb 19, 2014 at 12:51 PM
    #16
    MikeyLikesIt

    MikeyLikesIt Supercharged Mileage Master

    Joined:
    Jul 17, 2011
    Member:
    #60053
    Messages:
    342
    Gender:
    Male
    Can anyone confirm the Magnaflows will fit other years besides 2005 - 2009?
    I can't see why they wouldn't.
     
  17. Feb 19, 2014 at 1:21 PM
    #17
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    As long as you've got the 4.0L 1GR-FE engine, it SHOULD fit, but that's an assumption, so definitely research it a bit more.
     
  18. Feb 19, 2014 at 1:56 PM
    #18
    Justus

    Justus fucks not given

    Joined:
    Jan 4, 2013
    Member:
    #94417
    Messages:
    9,230
    Gender:
    Male
    First Name:
    Nabisco the kid
    In ur toolbox
    Vehicle:
    not so low, not so slow 2006 6 lug
    stockish
    Thorley pipe bomb is 1...... Urd is another.....Apr is another.

    u should have 2 sensors at the manifolds themselves... Then 2 more downstream on the y pipe. This design is normal for 2005-2014.


    I'll hop on my PC and get some pics in a second for ya
     
  19. Feb 19, 2014 at 2:05 PM
    #19
    Justus

    Justus fucks not given

    Joined:
    Jan 4, 2013
    Member:
    #94417
    Messages:
    9,230
    Gender:
    Male
    First Name:
    Nabisco the kid
    In ur toolbox
    Vehicle:
    not so low, not so slow 2006 6 lug
    stockish
    stock manifolds next to doug thorley long tubes......Yes, the headers have 2 bungs on each bank for 02 sensor locations and optional wideband setups



    sidebysideheaders_22419706eee5c25223df48812a31124f750252b6.jpg



    and stock y pipe next to URD y pipe

    see the buldge in the stock y pipe on each side? You should also see the bung (threaded hole) right by it, thats where the secondary 02 sensor screws in

    sidebysideypipe_0e199bf986f78e73c29c96ea5df3a8d2e89c8884.jpg
     
    Last edited: Feb 19, 2014
  20. Feb 19, 2014 at 2:35 PM
    #20
    Grenade187

    Grenade187 [OP] Well-Known Member

    Joined:
    Feb 18, 2014
    Member:
    #123436
    Messages:
    87
    Gender:
    Male
    First Name:
    Eric
    Vancouver, BC
    Vehicle:
    07 TRD Sport 4.0L V6 SR5 DCLB
    Camburg +3.5 Long Travel kit, Fox 2.5" Body 8" Coilovers with Remote Res, Radflo Air Bumps, Total Chaos coil bucket gussets, cam tab gussets and spindle gussets; All-Pro front bumper and IFS skid; All-Pro standard leaf pack; Ubolt flip; shackle flip; Timbren bumps; Radflo 2.5" body extended travel rear shocks, remote res with comp adjust; Magnaflow cat-back; Doug Thorley long tube headers, and off-road Y-pipe; URD TCAI
    well your pics aren't showing (might be my smart phone). So you're saying there should be 8 O2 sensors total? because I just crawled under my truck and all I see is one bung on the manifolds before the first set of cats, then the flange to the y-pipe, then another sensor on each side before the second set of cats but nothing after that.. so 4 O2 sensors total, two on each bank, one upstream, one downstream from the first set of cats.

    EDIT: your pics are working now. Yeah, I misunderstood you, my bad. Looks exactly like what I've got.. so the y-pipe actually has cats, they're not just resonators right? Does anyone know if all 4 cats are the platinum ones? Cause you can get $100+ for each one if that's the case..
     
    Last edited: Feb 19, 2014

Products Discussed in

To Top