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Thread: Question about LT headers & ORY

  1. #1
    Join Date
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    Question about LT headers & ORY

    I see alot of ppl on this board have this set-up and I am looking into do this also. My ? is do u guys that have this set-up on your truck have emissions testing in your state, and if you do does it pass?
    '04 CC 2500 6.0 4L80E, K&N CAI, Magnaflow dual exhaust exit b4 rear wheel, 93 black bear tune

  2. #2
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    No emissions here. If you have emission testing you could get dynotechs or lpp headers. They have resonators that look like cats.
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  3. #3
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    Quote Originally Posted by WARLOCK View Post
    No emissions here. If you have emission testing you could get dynotechs or lpp headers. They have resonators that look like cats.
    +1 also the ebay headers have them i should get mine on thursday, also all my other carputer stuff

  4. #4
    Join Date
    Jul 2009
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    Dynatech actually has cats. The ebay ones have resonators that look like cats. LPP is just 3" ORY. None here either
    04 Silverado Z-71 Extended Cab

    Magnaflow, 10.4 TV 50 wires, tr-55ix, Synthetics, HID's, JL audio, 33.5", leveling kit, tuned, CAI, vette servo, cam, valve job, pacesetter. 9.3@77.5 and 14.5@93.4

    06 2wd

    custom cam, tune, 3.73's, servo, HID's, 10.4mm wires, long-tubes, CAI, magnaflow, 2.5" shackles, Circle-D 3200, UD, JL Audio 4.1, Alpine 5ch

  5. #5
    Join Date
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    Newton, MA
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    Thanks for the replies guys. I was thinking of just installing the headers and ory, to see what i have for room and then I can weld in my own cats like the magnaflow spun cats.

    P.S. you guys are lucky with no emissions, we do it every other yr here in mass
    '04 CC 2500 6.0 4L80E, K&N CAI, Magnaflow dual exhaust exit b4 rear wheel, 93 black bear tune

  6. #6
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    Mar 2009
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    Cromwell, CT
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    Find a lienient shop to do the test for you. long tube headers move the location of the cats. And if the guy wanted to be a prick he can call that illegal. Your truck came equipped with close coupled cats. I think mass does all california emmissions
    01 ecsb 5.3 4x4 z71
    Avalanche 17s and a pant load of miles

    61 Corvette
    350, 4 speed, 4.56's

    32 Ford 4 door sedan
    keeping it "stockish"

  7. #7
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    Texas
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    no cats here, and no testing in my area. but to tell you the truth im thinking of putting in a pair of hi-flo cats to get rid of the exhaust smell. these days cats are actually getting pretty good. now on a vehicle i raced regularly i wouldnt bother with the expense. but the kiddo's nose when im loading him up in the truck with it running tells another story.
    2005 crew cab, new crate lq9 with comp 212/218, 558/563 on 115 cam, 80mm t.b. coated long tubes, off road y, flowmaster cat back, dynomax bullet, ngk plugs, msd wires, k&n cold air kit, 4.10 gears, auburn pro lsd, transgo shift kit, nelson drive tune, trailblazer i-6 torque convertor, anzo lamps, ss front bumper, z71 tahoe rear bumper, debadged, kenwood touchscreen with headrest monitors, JL components, coaxials, sub, 5ch amp. bell tech 2/4 drop. 22x10 ss wheels with 285/35/22 bfgs.

  8. #8
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    Quote Originally Posted by straightaxle View Post
    Find a lienient shop to do the test for you. long tube headers move the location of the cats. And if the guy wanted to be a prick he can call that illegal. Your truck came equipped with close coupled cats. I think mass does all california emmissions
    I do have a friend that does testing but if he left that shop or moved on to another type of work blah blah, i dont want to have to scramble around. I dont wanna be running around town with a red "R" on my insp. sticker it attracts unwanted attention
    '04 CC 2500 6.0 4L80E, K&N CAI, Magnaflow dual exhaust exit b4 rear wheel, 93 black bear tune

  9. #9
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    Jan 2010
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    Newton, MA
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    Quote Originally Posted by MEANGENE75 View Post
    no cats here, and no testing in my area. but to tell you the truth im thinking of putting in a pair of hi-flo cats to get rid of the exhaust smell. these days cats are actually getting pretty good. now on a vehicle i raced regularly i wouldnt bother with the expense. but the kiddo's nose when im loading him up in the truck with it running tells another story.
    I think im gonna just run some magnaflow spun cats and get some o2 extensions an make it a legal custom job lol if u can call it that. I have a kiddo too and i would like to keep the smell down also. Thanks for the replies and info guys
    '04 CC 2500 6.0 4L80E, K&N CAI, Magnaflow dual exhaust exit b4 rear wheel, 93 black bear tune

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