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Old 03-11-2008   #31
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Re: Dump valve?

Only thing that has been mentioned about a waste gate is hearing it through the GSR induction. No one has mentioned getting a waste gate valve?
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Old 03-11-2008   #32
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Re: Dump valve?

Wat is it on the bonalume website then please, its on there home page, Thanks. I'll be honest with you I dont no a great deal how these things work so all you comments are a great help, thanks.
http://www.bonalume.com/scheda_auto_en.asp?id=144
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Old 03-11-2008   #33
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Re: Dump valve?

It will be a dump valve just will have been translated wrong.
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Old 03-11-2008   #34
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Re: Dump valve?

O right thanks for that matt, wat is the max pressure the turbo runs at on the t jet
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Old 03-11-2008   #35
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Re: Dump valve?

Quote Originally Posted by punto_matt View Post
Only thing that has been mentioned about a waste gate is hearing it through the GSR induction. No one has mentioned getting a waste gate valve?
What noise does a wastegate make then? And i dont see how you can hear it through an induction kit, as theyre on different sides of the turbo
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Old 03-11-2008   #36
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Re: Dump valve?

you dont hear the wastegate with an induction kit.

on the t-jet you hear the re-cric valve dumping air back into the induction.
standard air box is extremely muffled.
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Old 04-11-2008   #37
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Re: Dump valve?

Quote Originally Posted by Repsol Joe View Post
Wat is it on the bonalume website then please, its on there home page, Thanks. I'll be honest with you I dont no a great deal how these things work so all you comments are a great help, thanks.
http://www.bonalume.com/scheda_auto_en.asp?id=144
This is an adjustable wastegate actuator it allows you to adjust the actual boost levels it is not a dump valve

You can sometimes hear the wastgate depending on the type of car I can certainly hear in on my turbo cinq it is a fluttering noise.
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Old 04-11-2008   #38
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Re: Dump valve?

But it's not the waste gate you're hearing- it's the pressurized air momentarily 'backing-up' and getting chopped up as it passes back through the compressor, as J4cko has already said-

Quote Originally Posted by j4cko View Post
Also, when people say they can hear "wastegate chatter" they are actually referring to the turbo stalling and back spinning, which makes that chopping sound, this can be heard through an induction kit.
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Old 04-11-2008   #39
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Re: Dump valve?

So with this u can adjust it to get more boost out of your turbo???
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Old 04-11-2008   #40
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Re: Dump valve?

Quote Originally Posted by allanhelen View Post
This is an adjustable wastegate actuator it allows you to adjust the actual boost levels it is not a dump valve

You can sometimes hear the wastgate depending on the type of car I can certainly hear in on my turbo cinq it is a fluttering noise.
So with this u can adjust it to get more boost out of your turbo???
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Old 04-11-2008   #41
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Re: Dump valve?

Quote Originally Posted by Repsol Joe View Post
So with this u can adjust it to get more boost out of your turbo???
Yes, but without a remap you may have problems.

If you're lucky the ECU will notice the boost above it's mapped limit and throw itself into 'limp-home' mode.

If you're unlucky you might start melting pistons.
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Old 04-11-2008   #42
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Re: Dump valve?

Right ok then so best thing really if i were to get 1 would be. take it to GSR wen i have remap and induction and have them fit it for me and they could tweek the map there to suit. Will it make much of a difference fitting this adjustable wastegate?
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Old 04-11-2008   #43
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Re: Dump valve?

I'd speak to the fella at GSR first. He's made good power increases from remapping alone, and if I'm certain he utilises the ECU's boost controller to increase boost electronically.

BTW, if anyone's thinking of disconnecting the re-circ piping they must blank-off the side which re-enters the Turbo inlet, otherwise various bits of dirt/flies/etc will impact the compressor blades or pass through into the engine causing damage either way. I'd recommend some sort of filter over the recirc valve outlet too.
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Old 04-11-2008   #44
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Re: Dump valve?

Quote Originally Posted by D4nny8oy View Post
But it's not the waste gate you're hearing- it's the pressurized air momentarily 'backing-up' and getting chopped up as it passes back through the compressor, as J4cko has already said-


If it was on a tJet then maybe but on my Turbo Cinq it definatly is not pressure backing into the turbo as that makes a very different chattering noise and my T15 would have disintegrated by now and is not a light flutter that is the definatly the wastgate.

But there again it is a different animal 1.2 bar of boost, a turbosmart dump valve and a Greddy EBC
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Old 04-11-2008   #45
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Re: Dump valve?

I believe that 1.3 bar is max on the T-jet turbo, I could be wrong but im sure i've read that on the forum. if it was 1.3 bar max is that what it will be running at or wat it can be made to run at?
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