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2.7L headers, what will it do for me?

Discussion in '4 Cylinder' started by norcal4banger, May 2, 2011.

  1. May 2, 2011 at 9:39 PM
    #1
    norcal4banger

    norcal4banger [OP] 11-98 MUD

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    I am not familiar with headers whatsoever and what kind of difference they would make for me. Does anyone have these on their 4 cylinders and what does it do for you?

    Also, have a aFe pro dry S filter but thinking about doing full CAI, would this be worth doing?

    Thanks
     
  2. May 2, 2011 at 10:08 PM
    #2
    05RedTaco

    05RedTaco Nom Nom Nom

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    Shortened antenna, ebay Intake, JBA long tube headers, 2nd set of cats cut out and straight piped, 14" Magnaflow muffler dumped before axle, relocated rear diff breather, Avid off road front bumper. Bilstein 5100's front and rear, OME 885x coils, Light Racing UCA's, 2" Toytec AAL, Hella 700ff lights, Falken Rocky Mountain AT/S 265/75/16 Load E 10ply, Blu Logic handsfree
    The header are the best performance modification for the 2.7L, you can expect between 4-10whp above 3k rpm. The header will also make your truck louder. If you go with a header go with LC Engineering header. The equal length, larger diameter runners, give you the best bang for your buck aside from Forced Induction.

    CAI will give you 1-3whp, and a lot of noise.
     
  3. May 2, 2011 at 10:22 PM
    #3
    norcal4banger

    norcal4banger [OP] 11-98 MUD

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    Awesome thanks. Do I just check our their site or order from a local shop? Do you run either?
     
  4. May 2, 2011 at 10:27 PM
    #4
    05RedTaco

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  5. May 2, 2011 at 10:32 PM
    #5
    norcal4banger

    norcal4banger [OP] 11-98 MUD

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    awesome thank you again. I might be doing this.
     
  6. May 2, 2011 at 10:33 PM
    #6
    norcal4banger

    norcal4banger [OP] 11-98 MUD

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    But as far as the CAI, it wont do anything? Just louder?
     
  7. May 2, 2011 at 10:46 PM
    #7
    05RedTaco

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    As far as hp and tq gains, maybe 1-3whp above 3k rpm and at 50%+ throttle. If you want as much performance from your 2.7L as you can extract, get CAI by all means. I don't think its worth it IMHO. $300 for 1-3whp is crazy expensive and finding used CAI for the 2.7L is almost impossible.

    Don't expect more low end grunt from CAI and header. All these modifications do is they allow more AIR in to the engine and more AIR from the engine. The stock intake and exhaust manifold work awesome below 3.5k rpm and below 50-60% throttle. Toyota designed the intake and header restrictive to some degree so they could keep the engine as quiet as possible without sacrificing much performance, especially below 3.5k rpm and below 50-60% throttle (closed loop) which is where most people are when they drive these work trucks. The stock intake and exhaust manifold becomes restrictive above 3.5k rpm and above 50-60% throttle, choking the engine and not allowing the maximum hp and tq output. By adding CAI and header the engine can breathe and exhale better above 3.5k rpm and above 50-60% throttle, the smart ECU squirts more fuel to compensate for the added air and the engine makes little bit more power. These gains come with the truck becoming louder especially when its above 3.5K rpm at 50-60%+ throttle.
     
  8. May 2, 2011 at 11:05 PM
    #8
    Matic

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    Actually the 2.7 supercharger is the best performance modification.
     
  9. May 2, 2011 at 11:09 PM
    #9
    05RedTaco

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    Forced Induction means "Supercharger", "Turbocharger", "Nitrous"...
     
  10. May 2, 2011 at 11:13 PM
    #10
    Matic

    Matic Locked and Lifted "02" DC TRD.

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    Gotcha. Skimmed it.
     
  11. May 2, 2011 at 11:24 PM
    #11
    Matic

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    Crap. Not to threadjack but since headers and superchargers came up I was trying to find a website I used to frequent for such items as well as complete 3rz racing blocks. It was like 3 letters. Lwc or Lmt something like that. Anyone know what i'm refering to?
     
  12. May 2, 2011 at 11:26 PM
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    05RedTaco

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  13. May 2, 2011 at 11:36 PM
    #13
    Matic

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  14. May 2, 2011 at 11:39 PM
    #14
    05RedTaco

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    No problem! Always glad to help if I can..
     
  15. May 3, 2011 at 3:57 AM
    #15
    Tepidy

    Tepidy Well-Known Member

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    Best horsepower gain without going to turbo or SC. I used a DT header and love it. noticable power gain plus makes the truck sound cool as hell
     
  16. May 3, 2011 at 5:39 AM
    #16
    skytower

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    I'm liking some of the stuff from LC Engineering. Wonder how much help the electric fan would be. I know it will make the AC work better while in traffic. The price on their clutches is pretty good too!
     
  17. May 3, 2011 at 7:23 AM
    #17
    Matic

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    Yea. I used to frequent this site alot and daydream. Some of there 22re motors are making some wicked hp. Very well respected company.
     
  18. May 3, 2011 at 8:34 AM
    #18
    Kravchenko

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    My concern about headers: Would I lose low end torque and hp? Or would there be a minor increase?
     
  19. May 4, 2011 at 3:36 AM
    #19
    Tepidy

    Tepidy Well-Known Member

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    I didnt loose any low end torque or HP as a matter of fact I feel like I gained
     
  20. May 4, 2011 at 8:29 AM
    #20
    05RedTaco

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    That depends on engine and header design. If the runners and collector are too big, yes you will loose low end power. I wouldn't be able to answer your question without looking at a dyno graph of stock 2.7L and 2.7L with LCE header.

    Butt dyno can be inaccurate.
     
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