fiestaturbo.com

[IanRST]

I want to know how much difference there is running one and not. I have one fitted but i was told that its best not to have one as when you dump the air it then has to charge back up again instead of it being already there.

[Stoned]

I have run with, and without.

Performance is defo better without one, but there is no hiss. Simple as that.

The difference is only minor however, it's mostly in throttle response.

[moulder]

TBH I prefer the sound of wastegate chatter as on mine it's pretty loud. Plus dump valves are not really needed and I think threy can be a little "bolt on billy". However I think when boost is extremly high dump valves are needed but only re-circulating ones. (Not too sure on this).

Do you see a WRC car pishing along the stage. No instead you hear the wastegate chatter, but more importantly the ANTI LAG.

[heeman10]

And how many tens of thousands of pounds did they spend on their ALS?! I think Sunny's the only person we're likely to see with anything like that! Dump valves all round until we all win the lottery

[wildheart]

Did have a dump valve,took it off.

Much better now

[penfoldian]

obviously there is a solid reason for why they were made, lets look at the big arse HGV trucks, they need em for some reason,
anyway besides the loud sound i'm sure its there to keep the turbo spinning, therefore more power right?

[Ford_whore]

if u got a good one that set up right sure that it will be fine, and how does anti la work, wit is it always wondered this

[Stoned]

I think it's just in the case of a FRST the turbo isnt big enough to need one and the effects are just not benificial

[AdrianFRST]

It's not the wastegate making the chatter noise, it's the air reverberating between the turbo blades and the throttle plate.

HGV's make the noise because of air brakes, not the turbo.

WRC cars don't run dump valves because they have no interest in turbo preservation. Anti-lag will kill the turbo quicker than compressor surge / stall.

[penfoldian]

ok so the trucks dont have em!! ok then i always wondered.
so really i can take mine out have get better performance??

[Stoned]

It's not the wastegate making the chatter noise

But they sound indentical, how are you meant to know?

I've watched vids of cars making wastegate chatter noise and it sounds just like mine does.

[Ben_frst]

i had a dumpvalve on the t2 wich i know is wrong as theres no lag really and now im going 4 a t3 hybrid running 16 psi min therefor i'll be using a d/v is this correct?

[Sparky]

I would also quite like to know what wastegate chatter sounds like.

Does this even exist, or has it always been misused to describe the sound of the air being chopped by the turbo blades?

I know that it is not the wastegate making that sound, so what is wastegate chatter?

[AdrianFRST]

Does this even exist, or has it always been misused to describe the sound of the air being chopped by the turbo blades?

I know that it is not the wastegate making that sound, so what is wastegate chatter?

It doesn't exist. It's simply a misconception term for compressor surge / stall.

The only sound wastegates make is a very loud screaming noise when external to the turbo and routed directly to atmosphere.

[Stoned]

Fine, so what we are all hearing is in fact 'wastegate chatter'

The term is incorrect but the event it applies too is what I thought it was.

[snake]

pimsle, yup no such thing as waste gate chatter, just blades cutting the air, all the wastegate is, is a metal plate that opens and shuts directing exhaust gasses into the blades, or bypassing it, actuator controls this.

[heeman10]

WRC cars don't run dump valves because they have no interest in turbo preservation. Anti-lag will kill the turbo quicker than compressor surge / stall.

Are you saying WRC cars don't have anti-lag? You should SEE the anti-lag they use, it's outrageous! Mucho dinero goes into it too, which I suppose will all go to waste if they follow this gay idea of taking their turbo's away

[AdrianFRST]

Are you saying WRC cars don't have anti-lag? You should SEE the anti-lag they use, it's outrageous! Mucho dinero goes into it too, which I suppose will all go to waste if they follow this gay idea of taking their turbo's away

Yes they do.

What I meant is there's no point having a DV to preserve the turbo if they are drasticly shortening it's life with ALS.

[TJ]

rally teams have the money to waste not worrying about how long the turbo lasts!

[Fezzy Turbo]

rally teams have the money to waste not worrying about how long the turbo lasts!

Most Rally teams have budgets, they dont have money to waste, so they will want everything to last as long as possible. If you see some of the prices of the parts for a WRC, you would understand why

Im currently running my car without the D/V and the flutter is SO loud!

[IanRST]

I have now taken the d/v off to be honest i dont know what is better, it does sound good but if its going to shorted the life of the turbo then i might put it back on.

[penfoldian]

I have now taken the d/v off to be honest i dont know what is better, it does sound good but if its going to shorted the life of the turbo then i might put it back on.

AGGAGAGARRRG!!

WHAT? u trying to tell me that this DV is making my turbo life shorter?
This post is making the DV a waste of time and money, there must some benefits besides a kool farting sound?!!!

[SimonT]

all dump valves do is prevent a shockload on the turbo when the throttle is shut at high boost levels - say 25+ psi

If you not running boost levels there is no point in dump valves - as they just release all the presure in the system meaning the its all gotta be done again!!