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  1. #1
    Wender Jones's Avatar
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    Red face Blow-off Valves: What is the big difference between then?

    More doubts: Blow-Off Valves

    At first glance, seems to been easy...
    But does anyone knows the real difference between these blow-off valves?
    I mean, advantages and disadvantages of each one...

    1> RIVA / HKS Performance Blow-off Valve:
    Name:  HKS blow off.jpg
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    2> R&D / Tial 50mm Surge / Blow-off Valve:

    Click image for larger version. 

Name:	Tial 613-95263.jpg 
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ID:	284481

    3: Greaddy
    / Blow-off Valve:
    Click image for larger version. 

Name:	G ready 613-95261.jpg 
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ID:	284482

    Hope we can discover and explain the true.

    Wender Jones


  2. #2

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    they are all very basic and do exactly the same job, it probs gose down to how much air the can flow in a very short amount of time, but i bet if you tryed all 3 you wouldent see a diffrence besides the sound they each make,

  3. #3
    Wender Jones's Avatar
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    Stig0000,

    Hhehehe.

    To say the true, I knew that most answers should be like this - about the sound only...

    Actually, the goal of this thread is to seek for someone who have had some expirience with this valves.

    Some people says that the amount of the air delivered is the key and the major difference between then. But what one is the best, afterall?

    Let´s continue with the discussion...

    Wender Jones

  4. #4
    Kristian Keppel Waterholics's Avatar
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    The valve on the tial BOV is massive, hence it flows way more air when open. Also it's adjustable so you can adjust it to how sensitive you like it. IMO I like the tial the most. Plus it looks and sounds the sexiest.

  5. #5
    64physhy's Avatar
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    The Greddy is also adjustable. I never notice any sound out of mine, but it could be the way it's adjusted.

  6. #6
    r33pwrd's Avatar
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    Quote Originally Posted by Wender Jones View Post
    Stig0000,

    Hhehehe.

    To say the true, I knew that most answers should be like this - about the sound only...

    Actually, the goal of this thread is to seek for someone who have had some expirience with this valves.

    Some people says that the amount of the air delivered is the key and the major difference between then. But what one is the best, afterall?

    Let´s continue with the discussion...

    Wender Jones
    I really doubt you will ever be able to say "what one is the best" but being im buying a BOV soon I would love to see peoples opinions on it.

  7. #7
    Olomana's Avatar
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    I will go for the Tial, I had it on my 600whp evo and it was doing its job! Best sound and look badass.
    Also the Tial has the biggest dia to move the air

    HKS is pretty good but don't like the noise it makes.

    I never liked the greddy because it was pita to adjust correctly, lot of issue with vavle flutter.

    I have owned all of them... but on a car... haha.
    Last edited by Olomana; 10-02-2012 at 01:37 AM.

  8. #8
    syk03t's Avatar
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    Stupid question i am only new to this but i have the tial how do i adjust it ??, By adjusting it will the noise be any diffrent ?? cause i can't hear it at all with the seat on but with the seat off i can scare a flock of birds

  9. #9
    Olomana's Avatar
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    You can't hear it because probably the boost you have in your PWC is not enough to move the valve.
    What spring do you have in your Tial? normally it comes with an 11 psi spring in it.

    Installing a smaller spring ( 7 psi ) will make easier the valve to move hence more noise.

    Quote Originally Posted by syk03t View Post
    Stupid question i am only new to this but i have the tial how do i adjust it ??, By adjusting it will the noise be any diffrent ?? cause i can't hear it at all with the seat on but with the seat off i can scare a flock of birds

  10. #10
    syk03t's Avatar
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    Its just factory never touched it, Installed it and off i went, My brothers ski is running 14psi same applys you cant hear it unless seat is off

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