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-   -   DUMP VALVE ADVICE NEEDED!!! (https://www.scoobynet.com/scoobynet-general-1/969991-dump-valve-advice-needed.html)

Tidgy 27 March 2013 02:35 PM


Originally Posted by Fudgey (Post 11038506)
mapping is usually a matter of distance/time lol

personal choices are few and far between, but the ones id mostly consider are, in alphabetical order, not order of preference:


MA Developments (Basingstoke)
MSD (motorsport developments blackpool)
Norris designs (nearest to me in Melksham)
Reyland motorsport (Birmingham)
Will Pedley Racing (Leeds)

aside from Simon Norris, the rest are well known ford tuners. i know alan jeffrey does subaru in plymouth, but not had any personal experience of them.

you do realise the impreza isn't made by ford?

Tidgy 27 March 2013 02:36 PM


Originally Posted by Gear Head (Post 11038507)
Is the search function not working? Seriously, another dump valve thread? :rolleyes:

To the OP - In a nut shell:

Fitting a VTA dumpvalve is a bad idea. They have no positive effects and lots of negative effects. Plus you will look like a complete plonker.

Save your cash and give the car a good service. :thumb:

Close thread?


nope cos thats your opinion, not fact lol

tubbytommy 27 March 2013 02:46 PM


Originally Posted by Tidgy (Post 11038511)
you do realise the impreza isn't made by ford?

+1 id go to a subaru specialist mapper as if any problems oocur they are more than likely to know the solution.

getting dave at the clutch centre to fit a curcuit board is only going to end one way


booooooooooooooooooooooom!

Fudgey 27 March 2013 02:52 PM

lol, i did say personal choices!

legacy_gtb 27 March 2013 02:53 PM

ah, the unmistakable sound of con rod fon doo!

IMO, theres only three places to go for subaru mapping, Simon at JGM, Pat Herbourne, and Bob Rawle ..... just my £0.02.




.... on a side note tubby, theres a blobeye sti in the carpark where i work that would really float your boat! Not only does it have a stick on roof vent, but hes also glued on non functioning bonnet pins and a fake timing beacon ..... scared to show you a photo as i know youll break out in a fit of uncontrollable spadge!

tubbytommy 27 March 2013 02:55 PM


Originally Posted by legacy_gtb (Post 11038527)
ah, the unmistakable sound of con rod fon doo!

IMO, theres only three places to go for subaru mapping, Simon at JGM, Pat Herbourne, and Bob Rawle ..... just my £0.02.




.... on a side note tubby, theres a blobeye sti in the carpark where i work that would really float your boat! Not only does it have a stick on roof vent, but hes also glued on non functioning bonnet pins and a fake timing beacon ..... scared to show you a photo as i know youll break out in a fit of uncontrollable spadge!


well thats just teasing, it sounds like a full house of fail

Tidgy 27 March 2013 02:56 PM

get it posted in its own thread :D

alcazar 27 March 2013 05:22 PM


Originally Posted by Orangio (Post 11038332)
lol @ people saying that dump valves on a scooby sounds chavvy

I think you need to look at the car you're driving if you're bothered about looking like a chav :lol1:

Oh, dear God....

It's NOT about being chavvy. Yes they sound chavvy and daft and are to make little girls moist, but so are lots of other things.:Whatever_

it's about PERFORMANCE.:thumb:

SURELY we fit things to our car to increase performance?

So why would anyone want to fit something, paying good money for it, when it CAN NOT increase performance and may well decrease it, or be detrimental to the engine, or both? WHY????:cuckoo:

I like the noise?

Fcuk off! lean out of the window and shout "Psssssht!! Look at me PLEASE!"
You couldn't look much dafter.;):lol1::lol1::lol1:

tubbytommy 27 March 2013 05:23 PM


Originally Posted by alcazar (Post 11038658)
Oh, dear God....

It's NOT about being chavvy. Yes they sound chavvy and daft and are to make little girls moist, but so are lots of other things.:Whatever_

it's about PERFORMANCE.:thumb:

SURELY we fit things to our car to increase performance?

So why would anyone want to fit something, paying good money for it, when it CAN NOT increase performance and may well decrease it, or be detrimental to the engine, or both? WHY????:cuckoo:

I like the noise?

Fcuk off! lean out of the window and shout "Psssssht!! Look at me PLEASE!"
You couldn't look much dafter.;):lol1::lol1::lol1:


hold on they make girls moist?

im fitting 2

Turbo Tone 27 March 2013 05:28 PM


Originally Posted by tubbytommy (Post 11038659)
hold on they make girls moist?

im fitting 2

F**k that. If that works I'm fitting as many as I can get under the bonnet!:lol1::lol1::lol1::lol1::lol1::lol1::lol1:: lol1::lol1::lol1::lol1::lol1::lol1::lol1::lol1::lo l1::lol1::lol1::lol1::lol1::lol1::lol1::lol1::lol1 ::lol1::lol1::lol1::lol1::lol1::lol1::lol1::lol1:: lol1::lol1::lol1:

urban 27 March 2013 05:35 PM

Something a bit different ;)

Tidgy 27 March 2013 05:49 PM


Originally Posted by alcazar (Post 11038658)
Oh, dear God....

It's NOT about being chavvy. Yes they sound chavvy and daft and are to make little girls moist, but so are lots of other things.:Whatever_

it's about PERFORMANCE.:thumb:

SURELY we fit things to our car to increase performance?

So why would anyone want to fit something, paying good money for it, when it CAN NOT increase performance and may well decrease it, or be detrimental to the engine, or both? WHY????:cuckoo:

I like the noise?

Fcuk off! lean out of the window and shout "Psssssht!! Look at me PLEASE!"
You couldn't look much dafter.;):lol1::lol1::lol1:

technicly you will be recircing warmer agitate air, compared to the nice snooth inlet flow, so technicly they are better for performnance :thumb:

Gear Head 27 March 2013 05:54 PM


Originally Posted by Tidgy (Post 11038693)
technicly you will be recircing warmer agitate air, compared to the nice snooth inlet flow, so technicly they are better for performnance :thumb:

Shame they don't work with the standard mapping then!

tubbytommy 27 March 2013 05:56 PM

blah blah blah mapping, overfuelling


the make girls moist..............lol

Tidgy 27 March 2013 06:12 PM


Originally Posted by Gear Head (Post 11038695)
Shame they don't work with the standard mapping then!

they dont always make things run bad, yes they can, but not always. Decats sometimes cause issues as well

Tidgy 27 March 2013 06:13 PM


Originally Posted by tubbytommy (Post 11038698)
blah blah blah mapping, overfuelling


the make girls moist..............lol


Is this like handbrake turn? the 100 infallable pulling method?


:lol1::lol1::lol1::lol1::lol1::lol1::lol1::lol1:

tubbytommy 27 March 2013 06:15 PM


Originally Posted by Tidgy (Post 11038715)
Is this like handbrake turn? the 100 infallable pulling method?


:lol1::lol1::lol1::lol1::lol1::lol1::lol1::lol1:

i always wondered why emma has her own dump valve :Suspiciou

JGlanzaV 27 March 2013 06:32 PM

All the people slating dumpvalves need to run man boost. You bunch of wimps!

veerinder9 27 March 2013 09:53 PM

A lot of people slate them not because of the sound, everyone has there own taste, I personally like the hks dv, but thats besides the point, many people have claimed that there dv's have leaked when they have ran a certain amount of boost (for example myself at 1.4), I always had that hesitation between gears, now I have gone dv'less and its smoother

I personally think that dv's have no good advantages over the std recirc or dv'less, going dv'less is another story but im not gonna start that topic as wel just have another thread that wont ever end with a final conclusion of whats really good.

We should all just experiment what we want and then decide what we think is best, trial and error, its all part of our projects right? :)

lordharding 27 March 2013 09:57 PM


Originally Posted by Gear Head (Post 11038507)
Is the search function not working? Seriously, another dump valve thread? :rolleyes:

To the OP - In a nut shell:

Fitting a VTA dumpvalve is a bad idea. They have no positive effects and lots of negative effects. Plus you will look like a complete plonker.

Save your cash and give the car a good service. :thumb:

Close thread?


All newbys should listen to the sensible advice that has just been posted
It always ends up in a five pager to the sensible ones just gave up on the uneducated and people that won't listen to the wise men among us

Do a search this DV debate has gone on for years
And yes the real enthusiast will just laugh at you going PpPpPPpPSSsSTTTtT

But yes the girls in MCDonald will like you so much you can impregnate them and get them a free council house and be on Jermany Kyle in a few years time. :D

JGlanzaV 27 March 2013 09:57 PM

The hks is a pull shut type mechanism if you get the ssqv. Because it won't leak as the boost pulls it shut.

I run my ssqv at 2.75bar and have no issues with it leaking.

I have an ssqv with a boost controller in line with the vaccuum source and means I get dump on full boost and chatter at low boost. :) best of both worlds, because at 2.75bar I feel without the dump valve I will damage the turbo

alcazar 27 March 2013 10:34 PM


Originally Posted by Tidgy (Post 11038693)
technicly you will be recircing warmer agitate air, compared to the nice snooth inlet flow, so technicly they are better for performnance :thumb:

Doesn't work like that, sorry.

And Tommy: did you miss the bit where I said little girls..LITTLE, ie: 14 or so?

:D :D

alcazar 27 March 2013 10:35 PM


Originally Posted by JGlanzaV (Post 11039031)
The hks is a pull shut type mechanism if you get the ssqv. Because it won't leak as the boost pulls it shut.

I run my ssqv at 2.75bar and have no issues with it leaking.

I have an ssqv with a boost controller in line with the vaccuum source and means I get dump on full boost and chatter at low boost. :) best of both worlds, because at 2.75bar I feel without the dump valve I will damage the turbo

And you aren't bothered about borewash or dilution of your oil?

tubbytommy 27 March 2013 10:36 PM


Originally Posted by alcazar (Post 11039110)
Doesn't work like that, sorry.

And Tommy: did you miss the bit where I said little girls..LITTLE, ie: 14 or so?

:D :D


lol didnt read that bit :mad:

BoozyDave 27 March 2013 11:17 PM


Originally Posted by alcazar (Post 11039110)
did you miss the bit where I said little girls..LITTLE, ie: 14 or so?

:D :D

:norty:

where can i get one of these dump valves? it will save me a fortune in 20p mix's :norty:

tubbytommy 27 March 2013 11:27 PM


Originally Posted by boozydave (Post 11039177)
:norty:

where can i get one of these dump valves? it will save me a fortune in 20p mix's :norty:


ive ordered seven from ebay.


perhaps we can organize a group buy.
"moist creating dump valves" :notworthy

MattyB1983 27 March 2013 11:28 PM


Originally Posted by JGlanzaV (Post 11039031)
The hks is a pull shut type mechanism if you get the ssqv. Because it won't leak as the boost pulls it shut.

I run my ssqv at 2.75bar and have no issues with it leaking.

I have an ssqv with a boost controller in line with the vaccuum source and means I get dump on full boost and chatter at low boost. :) best of both worlds, because at 2.75bar I feel without the dump valve I will damage the turbo

2.75 bar..... what turbo you using ??

adz556 28 March 2013 08:36 AM

So I'm intrigued, if a car is mapped with a dump valve fitted then surely it won't cause problems....unless the spring mechanism leaks boost obviously?

ad uk 28 March 2013 08:43 AM


Originally Posted by JGlanzaV (Post 11039031)
The hks is a pull shut type mechanism if you get the ssqv. Because it won't leak as the boost pulls it shut.

I run my ssqv at 2.75bar and have no issues with it leaking.

I have an ssqv with a boost controller in line with the vaccuum source and means I get dump on full boost and chatter at low boost. :) best of both worlds, because at 2.75bar I feel without the dump valve I will damage the turbo

2.75 bar !!!! Sound way high ???

veerinder9 28 March 2013 08:43 AM


Originally Posted by adz556 (Post 11039312)
So I'm intrigued, if a car is mapped with a dump valve fitted then surely it won't cause problems....unless the spring mechanism leaks boost obviously?

I still had that hesitation between gear changes even after my remap over a month ago, ive now gone dv'less, alot smoother, remap by JGM :)


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