the dump valve on a prodrive p2
14 November 2006, 06:54 PM
#7
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bollocks it is a dump valve my mate has dump valve that makes that noise. do u honestly think they would just leave it and let the turbo stall all the time when they can cure it with dump valve or blow off valve
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14 November 2006, 07:04 PM
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Originally Posted by 95blackWRX
bollocks it is a dump valve my mate has dump valve that makes that noise. do u honestly think they would just leave it and let the turbo stall all the time when they can cure it with dump valve or blow off valve
Its the wastegate as it shuts it forces the air back out of the rotating (sp)
turbo blades and makes that strange sound like turkies being stuffed under
the bonnet
14 November 2006, 07:22 PM
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95WRX:It is nowt to do with the wastegate end of.
Matt:You can' recreate that noise with a DV besides I think as much as I hate saying this Prodrive know what they're doing.
Matt:You can' recreate that noise with a DV besides I think as much as I hate saying this Prodrive know what they're doing.
14 November 2006, 07:25 PM
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Originally Posted by PICKLE
Oh no, you've started him off now!!!! 
https://www.scoobynet.com/6291060-post23.html
Have a read of that.
14 November 2006, 07:33 PM
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Originally Posted by Bat-Fink
No DV on the P2 hence the turbo stall.
Not sure if it runs ALS.
Not sure if it runs ALS.
P2 uses a modified Subaru Impreza STi engine and all wheel drivetrain, which incorporate two of Prodrive’s innovative technologies to enhance performance – ALS (Anti-Lag System) and ATD (Active Torque Dynamics). The two-litre flat-four engine is fitted with Prodrive’s ALS . This has been derived from the same system currently used on the Prodrive-designed Subaru World Rally Car, but modified for use on the road. ALS can keep the turbo on boost at low engine speeds, giving the car immediate throttle response and improved performance by using more of the engine’s 575 Nm of torque throughout the rev range.
i'll back you up Bat-fink
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14 November 2006, 07:35 PM
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Im mainly on Passion Ford mate but signed up on here to
sell a mates 02 WRX.
Seen alot of mikes posts and he knows his onions
This whole dump valve/ wastegate chatter thing has been going on
for an age
Love reading some replies to it.
sell a mates 02 WRX.
Seen alot of mikes posts and he knows his onions
This whole dump valve/ wastegate chatter thing has been going on
for an age
Love reading some replies to it.
15 November 2006, 09:48 AM
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well thanks for the replies I told my to shut up and get himself one of those rubber ducky things in place of a dv :-D if he wanted a funny noise, guys weired i tell ya
15 November 2006, 10:03 AM
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The P2 does not have a DV, it is the chatter off the turbo fins that create the noise. The reason some DV's create the same noise is because they are not releasing all the air to atmosphere.
15 November 2006, 10:05 AM
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Originally Posted by Andy51WRX
P2 uses a modified Subaru Impreza STi engine and all wheel drivetrain, which incorporate two of Prodrive’s innovative technologies to enhance performance – ALS (Anti-Lag System) and ATD (Active Torque Dynamics). The two-litre flat-four engine is fitted with Prodrive’s ALS . This has been derived from the same system currently used on the Prodrive-designed Subaru World Rally Car, but modified for use on the road. ALS can keep the turbo on boost at low engine speeds, giving the car immediate throttle response and improved performance by using more of the engine’s 575 Nm of torque throughout the rev range.
i'll back you up Bat-fink
Prodrive Press Release
i'll back you up Bat-fink
Prodrive Press Release
15 November 2006, 12:22 PM
#23
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Originally Posted by 95blackWRX
well my mate has a blitz blow off valve that makes that noise when he lifts off so i disagree ith the wastegate story
Originally Posted by every1sgottablue1
The reason some DV's create the same noise is because they are not releasing all the air to atmosphere.
This is just regards to hearing the flutter noise but running an atmos DV.
SO if you get the flutter noise when closing the throttle, its actually because theres not enough pressure to open the valve at all.
OR is it because theres not enough pressure to keep the valve open whilst the throttle is closed and its the valve opening and closing as the pressure rises and falls.
As for me, I took my atmos DV off on Sunday when I fitted an STI8 IC to my classic - what a difference! Will need some pursuading to go back to atmos DVs.
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