Which dump valve for JDM WRX STI V7
As title really 
I bought a Bailey Motorsport DV for my previous WRX and it was pleasant enough but I wondered whether to push the boat out and get an HKS SSQV for this one

I bought a Bailey Motorsport DV for my previous WRX and it was pleasant enough but I wondered whether to push the boat out and get an HKS SSQV for this one
I think there is an APS one in the classified for sale, I had APS everything (almost) on my V7 and it seemed to be top gear.
By the way, its not mine for sale, I dont even know the fella selling it.
By the way, its not mine for sale, I dont even know the fella selling it.
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From: MSOCs tyre and ROTA wheel dealer .Ruisliptyres@gmail.com
mate u will get alot of different views on dump valves from here , alot will say the standard one is best and others will give u the answer u are looking for , it is a sore subject imo always gets people arguing !
i had a standard
and ive had a forge and i liked em both
mags
i had a standard
and ive had a forge and i liked em both
mags
yes i agree some people do get a bit stressed when this subject crops up
, but as its a question thats asked almost every other day and the search function is free to everybody these days i'm sure some people get fed up of seeing it asked, remember how Ken Block got on peoples nerves after a while
To your original question,i got the VTA DV out my system early on and i used to have the HKS SSQV and would say this is one of the best available along with turbosmart. But I was soon back with a Re circ because of the bloody noise and the hesitation felt when excellerating/changing gear.
So i'm with Mr RA on this one having tried both.
HTH
Aaron
, but as its a question thats asked almost every other day and the search function is free to everybody these days i'm sure some people get fed up of seeing it asked, remember how Ken Block got on peoples nerves after a while
To your original question,i got the VTA DV out my system early on and i used to have the HKS SSQV and would say this is one of the best available along with turbosmart. But I was soon back with a Re circ because of the bloody noise and the hesitation felt when excellerating/changing gear.
So i'm with Mr RA on this one having tried both.
HTH
Aaron
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To your original question,i got the VTA DV out my system early on and i used to have the HKS SSQV and would say this is one of the best available along with turbosmart. But I was soon back with a Re circ because of the bloody noise and the hesitation felt when excellerating/changing gear.
So i'm with Mr RA on this one having tried both.
HTH
Aaron
So i'm with Mr RA on this one having tried both.
HTH
Aaron
Standard OEM DV is the new HKS SSQV (As in white is the new black)
Last edited by Boyakasha; Mar 29, 2009 at 08:09 PM.
I'm new too , on my last turbo car ( octavia vrs ) I just left it as it. Could some one kindly explain the difference between a "Recirculating type" and a "VTA" one ? I did notice when I changed to an induction fillter on the skoda I could hear the standard dump valve quite clear. I think they sound cool , I guess others don't.
Ben
Ben
VTA does what it say on the tin and vents the air out of the valve into the air making that whoosing noise whilst the OEM one recirculates the air down the black hose into the intake which you would block off on a VTA.
Last edited by Boyakasha; Mar 29, 2009 at 08:43 PM.
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From: MSOCs tyre and ROTA wheel dealer .Ruisliptyres@gmail.com
basicly a vta goes wwwwwwwooooooooooooooooooooooooooooooossssssssssss sssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhtttttt ttttttttthhhhhhhhhhhhhhhhhhhhhh
and the standard goes .................................shhh.
simple
and the standard goes .................................shhh.
simple
So what we saying here is stay with the standard baby it came with ??? I do like the sound but I'm not shelling out good money for something that will down grade my motor even if it does go wwwwwwwwoooooooooooooooooooooooossssssssssssssssss sssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh hhhhhttttttttttttttttttttttttttthhhhhhhhhhhhhhhhhh hhh
Ben
Ben
So what we saying here is stay with the standard baby it came with ??? I do like the sound but I'm not shelling out good money for something that will down grade my motor even if it does go wwwwwwwwoooooooooooooooooooooooossssssssssssssssss sssssssssshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh hhhhhttttttttttttttttttttttttttthhhhhhhhhhhhhhhhhh hhh
Ben
Ben
I'll explain.
Air entering the intake will have been metered by the MAF sensor, which allows the ECU to provide the correct amount of fuel to maintain a healthy A/F balance. When a VTA DV is used this air is lost from the system when the valve actuates. The ECU is unware of this and still provides the fuel. With little or no air to burn the excess fuel slips past the piston rings and into the sump mixing with the oil. This is a condition known as bore wash.
By using a recirc DV this prevents this problem as when the valve actuates, the metered air is contained within the system.
There is a good thread on here that Andy Forrest posted up explaining why VTA DV should not be fitted unless the car has been specifically set up for it. Andy is one the most respected tuners in the UK and what he doesn't know isn't worth knowing so if he says not to use a VTA DV then people really should listen.
Air entering the intake will have been metered by the MAF sensor, which allows the ECU to provide the correct amount of fuel to maintain a healthy A/F balance. When a VTA DV is used this air is lost from the system when the valve actuates. The ECU is unware of this and still provides the fuel. With little or no air to burn the excess fuel slips past the piston rings and into the sump mixing with the oil. This is a condition known as bore wash.
By using a recirc DV this prevents this problem as when the valve actuates, the metered air is contained within the system.
There is a good thread on here that Andy Forrest posted up explaining why VTA DV should not be fitted unless the car has been specifically set up for it. Andy is one the most respected tuners in the UK and what he doesn't know isn't worth knowing so if he says not to use a VTA DV then people really should listen.
Last edited by MrRA; Mar 29, 2009 at 10:24 PM.
I'll explain.
Air entering the intake has been metered by the MAF sensor, which allows the ECU to provide the correct amount of fuel to maintain a healthy A/F balance. When a VTA DV is used this air is lost from the system when the valve actuates. The ECU is unware of this and still provides the fuel. With little or no air to burn with the excess fuel slips past the piston rings and into the sump mixing with the oil. This is a condition known as bore wash.
By using a recirc DV this prevents this problem as when the valve actuates, the metered air is contained within the system.
There is a good thread on here that Andy Forrest posted up explaining why VTA DV should not be fitted unless the car has been specifically set up for it. Andy is one the most respected tuners in the UK and what he doesn't know isn't worth knowing so if he says not to use a VTA DV then people really should listen.
Air entering the intake has been metered by the MAF sensor, which allows the ECU to provide the correct amount of fuel to maintain a healthy A/F balance. When a VTA DV is used this air is lost from the system when the valve actuates. The ECU is unware of this and still provides the fuel. With little or no air to burn with the excess fuel slips past the piston rings and into the sump mixing with the oil. This is a condition known as bore wash.
By using a recirc DV this prevents this problem as when the valve actuates, the metered air is contained within the system.
There is a good thread on here that Andy Forrest posted up explaining why VTA DV should not be fitted unless the car has been specifically set up for it. Andy is one the most respected tuners in the UK and what he doesn't know isn't worth knowing so if he says not to use a VTA DV then people really should listen.
Thanks
Ben
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