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Best flowing dump valve

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Old May 9, 2011 | 07:42 AM
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Default Best flowing dump valve

My "forge copy" bov does not flow properly, i can still hear the turbo stalls a little bit even with low boost.

Does anyone have any suggestions to a better flowing one? Preferably a recirculating one. Unfortunately i only have a 25mm outlet in my boost hose.
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Old May 9, 2011 | 07:16 PM
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I know everyone has them buy I think as an allrounder the Bailey one is spot on
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Old May 9, 2011 | 07:21 PM
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how can u hear your turbo stall?
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Old May 9, 2011 | 07:24 PM
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Assume he means a bit of chatter as well, I can also hear this on my, but only a tiny chirp so no bigge, I run a atmo collins group a diaphragm dv.
tabetha
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Old May 9, 2011 | 07:25 PM
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all mine dose is chatter lol has done ever since fitting a spec r one did it with 350 and now with 500
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Old May 10, 2011 | 08:45 AM
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Yes i can hear chatter from the turbo, is that not the same as the turbo stalling a little bit?
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Old May 10, 2011 | 08:09 PM
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mine has a bailey and chatters aswel as the dump valve but should be getting the spec r recirc soon, ment to be realy good
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Old May 11, 2011 | 07:38 AM
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The raeson behind this is becuase the boost pressure has to overcome the tension on the secondary piston spring, or the main spring is slightly too strong, fitting a single piston dumpvalve or one with an adjustable main spring rate will cure this, but i dont think its a flow rate problem if you hear it light throttle/ low boost.
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Old May 12, 2011 | 03:40 PM
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this one flows really well,

makes almost no noise at all because it flows so well!

http://shop.motorsport-developments....-bov-688-p.asp

its fookin massive!
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Old May 13, 2011 | 04:35 PM
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looks a good bit of kit.... would it work well with my gt35r set up??
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Old May 15, 2011 | 07:09 AM
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Originally Posted by rsmark86
looks a good bit of kit.... would it work well with my gt35r set up??
Yes mate, works well on anything flowing a lot of air, its massive and the build quality pretty amazing to be fair. Best dump valve I have ever seen!
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Old May 15, 2011 | 10:04 AM
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Originally Posted by Stu @ M Developments
Yes mate, works well on anything flowing a lot of air, its massive and the build quality pretty amazing to be fair. Best dump valve I have ever seen!
ok cheers stu i will look into that before i have it mapped
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