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URD equal length headers for Canada

Discussion in 'Canada' started by Kevin W, Feb 6, 2014.

  1. Feb 6, 2014 at 10:13 PM
    Kevin W

    Kevin W [OP] New Member

    Oct 23, 2012
    First Name:
    Thinking of installing these URD equal length headers as soon as I pass my next Air Care in Sept as this is the last year they will be doing air care testing in British Columbia. I have a few questions which some of you more experienced engine modifiers may be able to help me with.

    1) How much of a power and MPG gain can I expect from these long tubes approximately?
    2) Since they will be eliminating the catalytic converter build onto the stock exhaust manifold I'm wondering how much louder the exhaust will be if I maintain the stock resonator and muffler?
    3) Are there any other parts I need to buy to make this work after taking off my stock exhaust manifold (i.e. the wire that attaches to the old exhaust header, or something to prevent the engine light from coming on.

    Thanks for any tips you can share as I am new to this forum.
  2. Mar 25, 2014 at 10:38 AM

    Vassily28 Well-Known Member

    Nov 24, 2011
    Quebec, Quebec, Canada
    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.
    1- Probably 20-25 HP between 3500-3750 rpm. About the MPG gain, forget about it. Somes here will not be ok with that one, but more pwer = more fuel.
    2- Which resonator you're talking about? What you will have is the second bank of catalytic converter and the muffler. The exhaust will be a bit louder over 3500 rpm, mostly at WOT.
    3- On URD site, the O2 plug and play simulators and 2 gaskets between the headers and Y-pipe.
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