Spot the plonker...

[philgold]

Just had to mention this one...

I took SWMBO out to a well-known Buckinghamshire town on Monday, to sit by the river and annoy the ducks.

Whilst walking back to the car, I heard an interesting 'whoosh' noise...'dump valve', I thought...and I was right...

On a Ford Focus DIESEL!

I won't tell you what I thought at that moment...I was expecting a Scooby, or an Evo, at least!

All the best,

Phil

[lennox1185]

One of those cr*p electric fakes! The ones the kids have on the saxo's!

One light touch on the pedal followed by a release.......wwwooooossshhhhh! It's funny watching them park up in a car park. Rolling back into the space and whooooshing for no reason!

[mkandy]

Actually my Audi does that and it's a diesel, it's been remapped though so I'm assuming it running more boost.

Rather than sound like a proper dump valve it's more high pitched, like the call of a pigeon, followed by a tsscchhh! It makes me laugh anyway!

[Punx0r]

You can fit a dumpvalves to a diesel, but there's absolutely no point, and it's more complicated as there's no engine vacuum on a diesel.

[C2K]

As above it doesn't need to be electric on a diesel it can be a real one. Popular amongst diesel owners it seems.

[Sheaf]

I like the way that petrol turbo owners think it's silly for a diesel owner to have a dump valve because it's not a fast car and it's just faking it... while I expect supercar owners are passing by turbo hatch owners laughing at their silly loud exhausts thinking how it's stupid to fake noise like that, you should go and buy something properly quick and loud and then you dont have to fake it...

It's all relative, it's a little unfair to mock people, when in the eyes of others you're probably doing the same thing.

[Mr_James]

My saab 900 has a dump valve thing is some petrol cars do actually need one because of the boost they're running mines running enough boost that it just blows recirc valves lol

But most cars don't actually need one especially ones running about 12psi

[shen]

My saab 900 has a dump valve thing is some petrol cars do actually need one because of the boost they're running mines running enough boost that it just blows recirc valves lol

But most cars don't actually need one especially ones running about 12psi

All turbo cars will benefit from a dump valve....whether they need them or not, so why not have one.

I also don't think that any car NEEDS a dump valve.....dump valves are relatively new inventions in car terms...you telling me that no engine prior to the 1980s could run high boost cos they didn't have dump valves on?

[Mr_James]

Actually most cars benefit more from a recirc valve but try using one when you're running 24psi just doesn't work

[Cableguy]

Actually most cars benefit more from a recirc valve but try using one when you're running 24psi just doesn't work

Nothing wrong with running a recirc at 24 psi.

[Mr_James]

Actually most cars benefit more from a recirc valve but try using one when you're running 24psi just doesn't work

Nothing wrong with running a recirc at 24 psi.

There is when even a forge one doesn't hold hard enough and you end up with a nice boost leak!

[Cableguy]

Actually most cars benefit more from a recirc valve but try using one when you're running 24psi just doesn't work

Nothing wrong with running a recirc at 24 psi.

There is when even a forge one doesn't hold hard enough and you end up with a nice boost leak!

Suggest Sard R2D2 , the more boost you run the tighter it holds shut.

[Mr_James]

Not quite sure why I just looked for it and didn't except it to to be expensive should have realised by the fact it had Sard in the name

[shen]

you can run very high boost without needing a dump valve or BOV and nothing should be breaking....as I think is the point, perhaps you need top quality parts which won't come cheap.

[Mr_James]

Problem isn't it breaking it's that it gets blown open from high pressure and finding one that can handle high pressure isn't easy or cheap.

[617sqn]

All turbo cars will benefit from a dump valve....whether they need them or not, so why not have one

Not according to RedLine magazine. They found there to be little or no benefit whatsoever. So I've scrubbed it off my wants list Makes better brakes a step closer.

Andy G.

[BrackenFox]

It's especially daft on a diesel as they actually lose you a fair amount of low end power, due to the always wide open inlet with no throttle butterfly. All you're doing is venting valuable boost to the atmosphere for the sake of a silly noise. In fact, a fake electric one would be better for performance.

But then again, I prefer my petrol turbos with a nice quiet recirculating DV (or none at all!) anyway, so the concept of someone taking away power on a derv to make that noise baffles me.