I had a "BAILEY" dump valve fitted by Graham Goode and was very pleased with it.

As to the best dump valve I am afraid I do not know......but the Graham Goode one did come colour coded to match the car and was 100% reliable.

The only bit of kit required is a dump valve fitting kit which I think is made up of the clips and tubing etc.

Hope this is of some help

 

I have a Forge Dump to Atmos which was fitted by Listers of Worcester last weds...it sounds awesome...

cost £150 fitted - make me an offer I need to sell it...

 

Will it fit a 1997/R STI

 

Hmm I see a lot of differing opinions on DTA dump valves And usually that they are bad for the car. If a Subaru dealer fits them then surely they cant be that bad?

 

P1Fan - thats why I went for it...
ROSSCC - I personally couldnt tell you...

 

Rich - is it an official listed upgrade or just a listers only deal? Does it affect your warranty at all? And finally does it sound good?

 

It sounded absolutely amazing...little chatter on low boost and a big whooosh on max boost...

...as for warrenty implications/failure...well I've I'd had problems cos of it my dealer and IM would have found out how angry I can get...

 

I may get a Forge dump valve. Is the re-circ DV quieter? Is there any particular reason why you bought a dump to atmos, as opposed to re-circ? I know sweet FA about dump valves, just wanna know the best option to go for

 

I went for noise

 

Is there a dump valve where you can "turn the noise off" if you wanted to? Would love to get one, but would really **** me off sometimes!

 

Provided you get the correct one, like a bailey Evo valve there should not be any kind of adverse effect to the car's running. The only exception is that fuel consumption may go up a little because they're so much fun you'll be on & off the throttle all the time just to hear it!

After having DVs on two different cars now over about 3 years, I have never ONCE tired of hearing that beautiful sound every time I change gear or lift off the peddle - I love it and wish it was much louder!

Difference between a recirc and an atmos is basically noise!

 

The HKS one has a re-circ kit, so it could be run either way. Not cheap, though! The dump-vavle, that is - the recirc kit is cheap!

 

ive got a forge v4 recirc, very quite indeed, it brings the car onto boost so much smoother it seems, took me 5 ins to fit in the dark too

 

Got my dump-valve fitting kit from Graham Goods today and mounted it with a recirc dump-valve.. I'm actually not sure what make the dump-valve is because I bought it from a tuning-store here in denmark, but it's kinda big and even though it don't make the "psssh" noise, it makes a cool "ps--hh-hh-hh" noise ;-) Like the one a Cosworth has..

I'm very pleased with it so far.. I also combined this with the SAMCO intercooler-kit, so the sound might have been reinforced by that..

 

What is the best dump valve to go for ?
Are they easy to fit ?
Does anything else have to be altered to accomodate the dump valve ?
Prices ?

[Edited by ROSSC - 3/8/2002 4:38:23 PM]