Wastegate chatter

[Foxy]

Just experimenting (arsing about) with my engine today and I unplugged this pipe....

And the result was this wastegate chatter.




Now I know this sounds very nice but is it healthy?!

 

[Willie]

No!

 

[Foxy]

Can anybody elaborate?

 

[push110]

recent thread about wastegate chatter, You don't really want it

http://www.seatcupra.net/forums/showthread.php?t=143801

I would connect the pipe back up again

 

[skahigh]

note post number 13

 

[Foxy]

Duly noted, however my dump valve is still connected and works ok.

 

[cupra@180]

Hi is that the pipe which is normally connected to the vac reservoir?

 

[Leigh15]

As a general rule of thumb - if VAG's engineers decided a pipe was needed - it was!!

 

[AdamRoutley]

just like the fmic that they fitted?

 

[stuart86]

id put it back
the pipe was there for a reason as it works with the vacum on the turbo.. or something along thos lines.

nice sound but not healthy.

similar to having an atmospheric dump-valve

 

[Leigh15]

just like the fmic that they fitted?

That's upgrading though isn't it?

What's being asked her is similar to "Does my car need a IC? Should I just unplug it?" not, "Shall I upgrade it for a better one?"

 

[skahigh]

That's upgrading though isn't it?

What's being asked her is similar to "Does my car need a IC? Should I just unplug it?" not, "Shall I upgrade it for a better one?"

exactly!

there is a big difference between adding something to your car and removing something!

 

[AdamRoutley]

haha was just jesting

 

[skahigh]

Duly noted, however my dump valve is still connected and works ok.

i was actually pointing out that apparently wastegates dont chatter....or so redline magazine say.

 

[cupra@180]

Is this one of the pipes along with the one connected to the dv (new vac source required!) that would be blocked of when removing the n249??

 

[Ninja]

what made you decide to pull off random pipes ??

 

[Foxy]

Well, I disconnected the big plastic reservoir ages ago and blocked the pipe with an allen key. I just pulled it out to see what would happen really... I tend to fiddle with things like that and mostly break them. Needless to say its now back to normal.

 

[jonathanp]

if the pipe is bunged it'll be fine but as you've found if its open it'll stop a vacuum being formed in the rest of the connected system so there will be no vacuum to help open the dump valve it'll just be sucking in air from the engine bay probably cause fuel trim problems eventually and a knacked turbo

 

[Big_daddy]

I had the exact strange sound on mines,I have the forge 007PA Dv installed, it turned out the dump valve diaphram blew and the plastic of the diaphram got sucked into the turbo compressor, causing he boost gauge to show -2 instaed of -8 at idle.

http://www.seatcupra.net/forums/showthread.php?t=119242&highlight=forge+failed

Forge replaced my DV with the 007P with metal piston. Thanks to forge