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Exhaust Cut-Outs ?

Discussion in 'Performance and Tuning' started by rcrick263, Feb 10, 2009.

  1. Feb 10, 2009 at 8:29 PM
    #1
    rcrick263

    rcrick263 [OP] Well-Known Member

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    Has anyone installed electronic exhaust cutouts on the 4.0 V6? Any power increase at all? Any better fuel economy? I'm sure they work great for older V8 vehicles and stuff, but does anyone know if they would do any good on a Tacoma besides make noise?
     
  2. Feb 10, 2009 at 8:30 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Mostly just noise makers.
     
  3. Feb 10, 2009 at 8:34 PM
    #3
    dually

    dually Low and slow

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    Not as many as the 98..
    Only good for boosted motors.... vrrrrroooom pshhhhhhhhhhh
     
  4. Feb 10, 2009 at 8:36 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Depending on the amount of boost. I have seen a few boosted motors get less h.p. with open pipes. Over 10 psi, though, and yes...they help. :)
     
  5. Feb 10, 2009 at 8:40 PM
    #5
    dually

    dually Low and slow

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    Not as many as the 98..
    Yeh, I just installed a E-cutout on a 94 3000gt VR4 twinturbo thats running about 14psi, and by the seat of the pants dyno, it made quite a difference.
     
  6. Feb 10, 2009 at 8:41 PM
    #6
    rcrick263

    rcrick263 [OP] Well-Known Member

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    Do you think they would sound good at all? I would probably install them after the cats and O2 sensors so it don't screw up computer readings but i wonder how much the cats would muffle? I noticed there are four of them!
     
  7. Feb 10, 2009 at 8:43 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Im sure it did. Be nice to see it on the rollers. But its hard to find a 4 wheel dyno.
     
  8. Feb 10, 2009 at 9:37 PM
    #8
    rcrick263

    rcrick263 [OP] Well-Known Member

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    I've heard that people have got better fuel economy with cutouts by changing back pressure by adjusting the cutout partially open or close. Does anyone know if this is true?

    I guess I'm just looking for an excuse to get some, Lol! I just think it would be cool to have some! Sometimes i want Loud exhaust sound and other times i want completely stock sound. But thats a lot of money just to do that! It would probably be cheaper for a whole exhaust system that will perform well too! Ill probably just do that.
    :confused:
    I don't know, but here is a video of how they work

    http://www.youtube.com/watch?v=P0tk5k7Gyp4
     
  9. Feb 10, 2009 at 10:19 PM
    #9
    311offroad

    311offroad Stock Taco For Now

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    I had a cutout on my 99 camaro, sounded good and loud at low rpms, but when you opened it up it got to be a little much.
     
  10. Feb 10, 2009 at 10:36 PM
    #10
    rcrick263

    rcrick263 [OP] Well-Known Member

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    Did your camaro have a v8 or v6?
     
  11. Feb 11, 2009 at 3:59 AM
    #11
    ERdept

    ERdept Well-Known Member

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  12. Feb 11, 2009 at 4:08 AM
    #12
    luk8272

    luk8272 Poodoo

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    I personally don't think cutouts are useful in these trucks.
     
  13. Feb 11, 2009 at 5:57 AM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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  14. Feb 11, 2009 at 9:02 AM
    #14
    type o negative

    type o negative Well-Known Member

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    I installed cut offs in my 06 Mustang GT. Sounded AMAZING! oull up to a stop light and some ricer wants to race, open those bad boys up and its like a rottweiler barking at a chiuaua BUT. I lost so much bottom end! Unless you have a lot of work done I think the motor relies on the back pressure for the a lot of the torque, think putting your thumb over part of the hose to make a higher power stream.
     
  15. Feb 11, 2009 at 10:45 AM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Actually, Scavenging of the exhaust is much more important than back pressure.
     
  16. Feb 11, 2009 at 11:37 AM
    #16
    type o negative

    type o negative Well-Known Member

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    Which also makes sense. I just figured that was the only thing I could think of to why I would have less bottom end. Top end was way better, i figured it was becuase once im at the top end there is enough flowing that it wouldnt need back pressure. Keep in mind, I have no idea how the physics anything auto work ;)
     
  17. Feb 11, 2009 at 12:01 PM
    #17
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Read the stuff I worte. I posted a link to how it all works in post #13 above.:)
     
  18. Feb 11, 2009 at 12:20 PM
    #18
    type o negative

    type o negative Well-Known Member

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    That was a great write up! Helps me understand a lot better, explains perfectly why cut off are NOT a great idea if your looking for performance.
     
  19. Feb 11, 2009 at 12:24 PM
    #19
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Glad you liked it, and it cleared things up for ya. ;)
     
  20. Feb 11, 2009 at 7:13 PM
    #20
    rcrick263

    rcrick263 [OP] Well-Known Member

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    Nice right up! I learned a lot from it. You have answered all my questions. Thank you very much! Definitely not getting cutouts. Lol!

    (Off Subject)
    Sorry but what are the green dot things below everyone's name? Is it reputation? How does it work? Someone gave me "rep points", how do i give them points?

    Oh and thanks for moving my thread to the right category! Whoever might have done that.
     
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