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Getting Headers!!!

Discussion in 'Performance and Tuning' started by AZsurfer13, Dec 19, 2007.

  1. Dec 19, 2007 at 6:40 PM
    #1
    AZsurfer13

    AZsurfer13 [OP] Well-Known Member

    Joined:
    Dec 15, 2007
    Member:
    #3845
    Messages:
    64
    Houston, Texas
    Vehicle:
    07 Regular Cab Tacoma
    Total Chaos 3" Coil Over and Control Arms, 15" American Racing Mojave's, 31" BFG A/T, Doug Thorley Ceramic Coated Header, Magnaflow Cat Back Exhaust, AFE Stage 2 Cold Air Intake, 20% Tint. (All work done by SDHQ Offroad, www.sdhqoffroad.com)
    I'm getting some Doug Thorley headers this month I am sooo Stoked! They add about 20hp according to the dyno results.:eek:
     
  2. Dec 19, 2007 at 6:57 PM
    #2
    tacotoe

    tacotoe Pastry Chef

    Joined:
    Nov 25, 2007
    Member:
    #3593
    Messages:
    422
    Nebraska
    Vehicle:
    `01 DBL Cab TRD
    Gibson Cat-Back Exhaust
    Cool man, with the other mods you allready have intake/exhaust,hedders will be a good addition too.I dont have hedders on my Tacoma, but on my fullsize domestic (K1500 -`93), I picked up 2mpg.
     
  3. Dec 19, 2007 at 6:57 PM
    #3
    lsocoee

    lsocoee My hair is all natural Staff Member

    Joined:
    Feb 9, 2007
    Member:
    #872
    Messages:
    10,104
    First Name:
    Hotdog
    Vehicle:
    2007 PreRunner SR5 Double Cab
    Wet Okole Underwear
    I'm so jealous. I wish Santa brought me some, but I'm not holding my breath.
     
  4. Dec 19, 2007 at 7:00 PM
    #4
    AZsurfer13

    AZsurfer13 [OP] Well-Known Member

    Joined:
    Dec 15, 2007
    Member:
    #3845
    Messages:
    64
    Houston, Texas
    Vehicle:
    07 Regular Cab Tacoma
    Total Chaos 3" Coil Over and Control Arms, 15" American Racing Mojave's, 31" BFG A/T, Doug Thorley Ceramic Coated Header, Magnaflow Cat Back Exhaust, AFE Stage 2 Cold Air Intake, 20% Tint. (All work done by SDHQ Offroad, www.sdhqoffroad.com)
    Whats funny is I bought this truck as a work truck and I am slowely making it into a rocket. I should be able to get twice the work done now right!?:)
     
  5. Jan 18, 2008 at 7:50 AM
    #5
    L_Jackson

    L_Jackson Well-Known Member

    Joined:
    Jul 14, 2007
    Member:
    #2093
    Messages:
    450
    Houston, TX
    Vehicle:
    2007 Black Sand Pearl PreRunner Acce
    Tinted Windows, Tow Hitch, 3" Toytec Lift, American Racing Outlaw II Wheels, Cooper Discoverer 33's, Aries Bull Bar w/ (2) 5" Lights, Nerf Bars, Fog Lights as DTR Lights, Roll Bar w/ (4) 5" Lights, Sony Speakers, 2 Extra Tie Downs
    Did you get those headers? get the gain u wanted?
     
  6. Jan 20, 2008 at 3:38 PM
    #6
    biorunner1

    biorunner1 Active Member

    Joined:
    Sep 11, 2007
    Member:
    #2674
    Messages:
    43
    San Diego
    Vehicle:
    SR5 Prerunner
    Kenwood DVD, Navi TV tuner, Ipod, FM Traffic Reciever Thorley Headers AFE Intake Custom Exhaust URD MAF Calibrator American Racing BFG AT Wheels Fox Racing Shox Total Chaos Control Arms Tint
    So I just got those same headers. I also had them add a Flowmaster 70Series and already had AFE Intake.

    I've tried to feel the gain but Im not sure if I am happy with the headers yet. Strait off the line I feel some punch but it seems to sag at 1500 rpm's. I suppose thats the Torque I gained, but is not too impressive. Around 3700 Is where the Intake kicks in and it gets loud but was like that before the other Mods.

    I saw those power gains too on the Doug Thorley web site but i just don't feel it. Im wondering if I need to do some tuning or do I really need a chip. That Unichip seems to be the only thing available but I didnt want to have to drop another 800 just to benifit from those headers.

    Anybody else have an Idea of what I can do or what others can expect if they get headers?
     
  7. Jan 23, 2008 at 10:20 AM
    #7
    Big Guns

    Big Guns Well-Known Member

    Joined:
    Oct 10, 2007
    Member:
    #2993
    Messages:
    181
    Temecula, CA
    Vehicle:
    07 PreRunner SR5 4.0L Indigo Blue
    Aero Turbine 2525 exhaust, Black Headlight Mod, DO Rock Sliders
    I was considering headers on my prerunner to go along with my exhaust/intake combo. I saw the 31hp gain dyno sheets online and got excited, but after talked to a couple gear heads ad truck shops, even with exhaust, intake, headers, your only looking at about 10-13hp gains overall. You will prob feel a diff in low end torque gains, but you will not get that 50hp gains that online dynosheets claim without some major overhauls. HP is expensive. :(
     
  8. Jan 28, 2008 at 9:04 PM
    #8
    AZsurfer13

    AZsurfer13 [OP] Well-Known Member

    Joined:
    Dec 15, 2007
    Member:
    #3845
    Messages:
    64
    Houston, Texas
    Vehicle:
    07 Regular Cab Tacoma
    Total Chaos 3" Coil Over and Control Arms, 15" American Racing Mojave's, 31" BFG A/T, Doug Thorley Ceramic Coated Header, Magnaflow Cat Back Exhaust, AFE Stage 2 Cold Air Intake, 20% Tint. (All work done by SDHQ Offroad, www.sdhqoffroad.com)
    Yeah I know what you are talking about with the intake at about 3700rpm's. I felt a significant change in my truck from about 2000 to 4000 I can feel where the header unleashes its power. I can def feel it on the freeway too, I can pass people a heck of a lot easier now. When I visit back home Im getting my truck dyno tested so I'll know for sure then what Im getting
     
  9. Jan 28, 2008 at 9:07 PM
    #9
    AZsurfer13

    AZsurfer13 [OP] Well-Known Member

    Joined:
    Dec 15, 2007
    Member:
    #3845
    Messages:
    64
    Houston, Texas
    Vehicle:
    07 Regular Cab Tacoma
    Total Chaos 3" Coil Over and Control Arms, 15" American Racing Mojave's, 31" BFG A/T, Doug Thorley Ceramic Coated Header, Magnaflow Cat Back Exhaust, AFE Stage 2 Cold Air Intake, 20% Tint. (All work done by SDHQ Offroad, www.sdhqoffroad.com)
    I do think to get the maximum hp out of them there needs to be some tuning done, but I felt the power gain for sure. I can spin my 31 BFG's A/T with ease and chirp in 2nd
     
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