How To Get Wastegate Chatter

[mctwistuk]

As topic says. How do you get wastegate chatter without spending a fortune?

Of all things to make me think of this was tonight when an astra Vxr passed by the house and I could hear wastegate chatter from it. It sounded good.

[fai17]

That ain't the waste gate

[badbaz]

Explaining what it is might be handy Peter?

[fai17]

It's Chris chattering with the cold weather

[scoobywho]

Probably the burbery badge on his hat touching the sun visor

[mctwistuk]

Lol. Never said I liked the Vxr it just got me thinking when it passed. Fitting an induction kit on the focus st gives you it but I know that doesnt work on scoobs. So is it bigger turbo that is required?

[paul555sti]

An induction kit lets you hear the turbo more. Blocking off the dump valve causes a similar noise to what your after but it's only advised with certain turbo series.

[monsterenergy]

I've got a Typhoon induction on my 08 STi and you hear a flutter under hard acceleration and a very loud pssssssht on lift off.

However, this seems to only be audible inside the car - cos when the missus was videoing from trackside at Knockhill the other day all you could hear was exhaust and no flutter or pssssht.

[scoobywho]

My impreza does it with the k and n induction kit on but took it off to save some fuel lol

[matt-scoobie347]

i have the inner wing induction on mine and get both sounds all the time every gear it get a bit much after a while

[monsterenergy]

i have the inner wing induction on mine and get both sounds all the time every gear it get a bit much after a while

NEVER!

Even the missus told me recently she likes the sound now!

I find it a good way to tell how much fuel I'm using... louder weeesssssshhhh = more money to Mr Shell.

[ciaranrb5]

It's turbo stall.

Basically when you lift off the throttle after being on boost it traps the pressure between the throttle body butterfly and the turbo. The pressure causes the turbo to slow down which is the noise you hear.

Here endith my lesson

[mctwistuk]

So what mods do you need to get it?

[spect]

doh!

[matt-scoobie347]

So what mods do you need to get it?

all i did was put in a inner wing induction kit and hey presto it was there

[kennyuk300]

So what mods do you need to get it?

Blank off your DV .

[colin_ross]

So what mods do you need to get it?

You don't want it.

Turbo stall is bad for the turbo and increases lag dramatically.

[badbaz]

Sometimes noises are more important than anything else Colin

[monsterenergy]

So what mods do you need to get it?

Would removing the airbox silencer have the same effect if it's just noise ye want?

Wouldn't need a remap either I don't think if you were just removing a silencer.

What model is your car?

Link for youtube vid of intake silencer delete

Edited May 18, 2012 by monsterenergy

[ciaranrb5]

You don't want it.

Turbo stall is bad for the turbo and increases lag dramatically.

Granted it is bad for the turbo.

But how would it increase lag?

[boyward]

Granted it is bad for the turbo.

But how would it increase lag?

Based purely on my common sense, if you stall the turbo you've slowed the turbine speed, therefore to get back on boost you need to get the turbo spinning up again which requires exhaust gasses flowing through the turbo. This means you've got to wait for the revs to increase which in turn gets exhaust gasses flowing which then gets the turbine back up to speed and then you'll get your boost back.

Edited May 22, 2012 by boyward

[ciaranrb5]

Based purely on my common sense, if you stall the turbo you've slowed the turbine speed, therefore to get back on boost you need to get the turbo spinning up again which requires exhaust gasses flowing through the turbo. This means you've got to wait for the revs to increase which in turn gets exhaust gasses flowing which then gets the turbine back up to speed and then you'll get your boost back.

Right we're on two different paths here. DV delete stalls the turbo and will cause lag all be it not very much.

To get "wastegate chatter" one just needs to get an induction kit and have the car mapped to suit.

[scoobywho]

Just put two in so the can chatter with each other

[fai17]

It should lessen lag if mapped for the dv delete.

Yes it's bad for turbo.

[arch]

lolly pop stick in the comprerssor