Hello , i am Derek. my second z3 this one Boston green 2.8.

[Septimus 9]

Are there any meetings/ pub in Southampton area? Does any body know what the function of the vacuum operated flap in one of the twin exhaust pipe does?

 

[Grumps]

Hi Derek, welcome come from me and @jue1 (the wife) up here in rainy Mansfield. @Lee is Basingstoke way I think and goes to some events. He'll probably be along now I've tagged him to tell you more. Enjoy the forum.

 

[oldcarman]

Welcome Derek from Canada! Hope you enjoy the forum and I believe there are several members from down your way and they should be along shortly to greet you! JIM

 

[miller1098]

Snap

 

[andyglym]

Hello Derek, welcome to you and your Zed from West Cumbria

 

[ZTec]

Hi Derek, and to the forum from Llantwit Major near Cardiff.

 

[Lee]

Welcome Derek I'm not to far from you and there seems to be a few meets up on portsdown hill at the moment.

Your vacuum operated valve usually opens when you hit a certain RPM range to give the exhaust a nice noise.

 

[andyglym]

Welcome Derek I'm not to far from you and there seems to be a few meets up on portsdown hill at the moment.

Your vacuum operated valve usually opens when you hit a certain RPM range to give the exhaust a nice noise.

Every day's a school day. Thanks @Lee

 

[Lee]

Here is the info

http://www.realoem.com/bmw/enUS/showparts?id=CH32-EUR---Z3-BMW-Z3+2.8&diagId=18_0383

 

[andyglym]

Here is the info

http://www.realoem.com/bmw/enUS/showparts?id=CH32-EUR---Z3-BMW-Z3+2.8&diagId=18_0383

Great info, many thanks.

 

[GazHyde]

Welcome Derek

 

[t-tony]

Hi Derek and welcome from up near Lincoln. My 2.0 has the valve in the back box but it's stuck wide open and I like it that way, nice noise all the time!

Tony.

 

[Jack Ratt]

hello from Cornwall

 

[Antm72]

HI Derek my 2.8 has the same valve its closed at low rpm but if you blip the throttle certainly in a confined space you can hear it operating and the exhaust note changes.
Great choice of car and welcome to the fold

 

[Antm72]

HI Derek my 2.8 has the same valve its closed at low rpm but if you blip the throttle certainly in a confined space you can hear it operating and the exhaust note changes.
Great choice of car and welcome to the fold

 

[Jack Ratt]

So good he said it twice

 

[billz]

Welcome to the land of Zeds

 

[Brian4]

Hi and welcome from me born and bred in Southampton but left for the North, well north of Watford Gap 40 years ago.
For those with auto's there is no flap in the exhaust.

 

[t-tony]

For those with auto's there is no flap in the exhaust

There is on mine Brian

Tony.

 

[Rha]

Hi Derek and welcome from me in Hertfordshire, my 2.8ltr had flap on OEM exhaust, after fitting a powerflow S/S system the flap was made redundant as with the vacume pipe the latter being plugged and tucked away under rear bumper just in case OEM exhaust was fitted at a later date. Hope this helps. Rha, Roy.