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exhaust stats?

Discussion in 'Performance and Tuning' started by DCtodave714, Apr 25, 2011.

  1. Apr 25, 2011 at 8:46 AM
    #1
    DCtodave714

    DCtodave714 [OP] Member

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    any1 have a link to actual stats for exhaust improvments?

    does it actullay improve gas, gain hp?


    thanks in advance!
     
  2. Apr 25, 2011 at 8:58 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    I tested quite a few exhaust systems on a dyno, but my Wife threw out all my notes (along with the dyno sheets). Anyway, From what I found, Flowmasters cause a loss of up to 5 hp, depending on model. Dynomax Super Turbo has shown gains of 8 hp on teh 4.0 V6, and 5 to 6 on the 3.4 V6. Jardine, Borla, TRD, Gibson, have shown about 5 hp on the 4.0, and about 4 on the 3.4. For the first gen 2.7, most mufflers except Flowmaster (which lost 4 hp on the 2.7) showed a gain of about 4 hp. Interestingly enough, A muffler from the 4.7 V8 Tundra engine showed a 5 hp gain on teh 2.7. Exhaust diameter up to 2.5 hp showed minimal differences, but 3" and above seemd to kill bottom end up to about 3000 to 3500 rpm, regardless of engine size.
     
  3. Apr 25, 2011 at 9:14 AM
    #3
    tc98tacoma

    tc98tacoma Well-Known Member

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    chris4x4 which muffler do you think would be best for my 2.7 ?? want somewhat of a deeper tone
     
  4. Apr 25, 2011 at 9:15 AM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Flow master gives the deepest tone.
     
  5. Apr 25, 2011 at 9:19 AM
    #5
    woody6047

    woody6047 McGrubber

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    no kidding flowmaster loses horses.
     
  6. Apr 25, 2011 at 9:21 AM
    #6
    tc98tacoma

    tc98tacoma Well-Known Member

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    3inch toytec coils 5100's, aal(soon to be replaced), 33/12.5 km2s, + a money hole...
    well now that i know that you loose hp i dont want one
    any other ones you think would be good?
     
  7. Apr 25, 2011 at 9:42 AM
    #7
    DCtodave714

    DCtodave714 [OP] Member

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    thanks chris
     
  8. Apr 25, 2011 at 11:40 AM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Its tough for the 2.7, as none really make it sound nice and low.
     
  9. Apr 26, 2011 at 8:58 AM
    #9
    tc98tacoma

    tc98tacoma Well-Known Member

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    yeah well how bout forget about the sound i dont take it above 3000rpms any way
    i was gonna buy a dynomax exhaust but dont know much about the quality
     
  10. Apr 26, 2011 at 9:17 AM
    #10
    NYCO

    NYCO ┌∩┐‹(ಠ_ಠ)›┌∩┐

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    did you test the magnaflow?
     
  11. Apr 26, 2011 at 9:29 AM
    #11
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Yes. On the 3.4 and the 4.0, and it showed about the same gains as the others. 4 to 5 hp.
     
  12. Apr 26, 2011 at 9:34 AM
    #12
    08pretaco

    08pretaco Almost there

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    my jardine sounds pretty nice with my dt header...at least to me in the cab sounds nice. my girlfriends sister complimented me as well on the exhaust...but she is a woman so idk how much of that to take :p
     
  13. Apr 26, 2011 at 9:51 AM
    #13
    seksilumpia

    seksilumpia Well-Known Member

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    its weird how flowmasters actually lost power..they sounded good so i considered them as my top 3 choices,but i ended up getting a TRD exhaust.
     
  14. Apr 26, 2011 at 9:55 AM
    #14
    BrokenTusk

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    I had a magna flow Cat back at first, I hated the massive harmonic Drone i was getting from 2100 to 2500 RPMs, basically the main driving band. I ended up switching muffler to flow master, but kept the custom cat-back pipes. Sounds amazing and ass dyno showed no loses.
     
  15. Apr 26, 2011 at 10:03 AM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Ass dyno is not accurate at all.
     
  16. Apr 26, 2011 at 10:22 AM
    #16
    belcher

    belcher Well-Known Member

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    Seems like the most gain comes from changing out the front Y-pipe and loosing the 2nd set of cats if you are not in California...just as much as a cat-back without the expense...(4-5hp)...custom front Y-Pipe is about $200.
     
  17. Apr 26, 2011 at 11:36 AM
    #17
    Slodgetto

    Slodgetto Über Posre

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    Good info! Which Flowmaster did you test though? Have you tested the 10 series??? It's considered a racing muffler so I wonder if It would perform better than the 40 series for instance. :notsure:
     
  18. Apr 26, 2011 at 11:55 AM
    #18
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    I tested the 40, 50 and one other that I cant remember....It was the Dual exhaust one.
     
  19. Apr 26, 2011 at 12:04 PM
    #19
    Slodgetto

    Slodgetto Über Posre

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    Ok, thanks! I'll be doing more research then.... Magnaflow, or Flowmaster 10 series... :typing:
     
  20. Apr 26, 2011 at 12:27 PM
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    BrokenTusk

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    Mine is the flowmaster racing type i believe?? dammit, now i'm gonna have to go dig up the paperwork
     
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