[Michael BD]

Here is the thread discussing it:

http://www.e90post.com/forums/showthread.php?t=655592 There is a Youtube vid showing what those guys in the USA did.

Question is, any harm in doing it? If you have done it, notice any difference to the sound of your car.

[woosh]

Don't do this. Your car will explode if you perform this mod.

-A message brought to you by BMW Australia.

[woosh]

lol but seriously, no it doesn't do any harm. It keeps the flap open so the exhaust sound is a little louder. Nice and easy mod.

[pavo335]

if you have a jb4 just enable canflap. much louder on startup but after that pretty much the same. my neighbours love it

[RaihaX]

You get a bit more burble from memory.

ps. are you bornadog from Whirlpool ?

[Michael BD]

Originally Posted by RaihaX

You get a bit more burble from memory.

ps. are you bornadog from Whirlpool ?

yes I am. Was it you recommending me to this site

[Stuart@BMRAutowerkes]

Done the golftee mod, no long term repercussions, slight increase in sound especially on cold start, easily reversible, do it

[rayz]

Can this be done on a 323?

[e92sydney]

As pavo335 said, if you have JB4 it's a cool feature. I have always wondered if we might get trouble from cops if say I got stopped at a RBT, but with JB4 you can switch it on/off electronically from the driver seat.

Sounds great in the morning during cold starts. But unfortunately you would hardly notice it while driving.

I have noticed that if I rev it hard at start up (not generally a good idea), the exhaust would get a few loud pops. Sometimes it does it under hard acceleration too, I may* have done it to scare some pedestrians in the city. Not sure if it would normally do it without the golf tee mod. Cheers!

[RaihaX]

Originally Posted by bornadog335i

yes I am. Was it you recommending me to this site

It was someone else, by the time I saw your thread someone already recommended it.

[Panza]

just pull the plug in the boot.
20 seconds, tops.

[RaihaX]

Originally Posted by Panza

just pull the plug in the boot.
20 seconds, tops.

+1

or get an aftermarket exhaust that doesn't have the flap to begin with

[Jeef Beef]

Originally Posted by e92sydney

As pavo335 said, if you have JB4 it's a cool feature. I have always wondered if we might get trouble from cops if say I got stopped at a RBT, but with JB4 you can switch it on/off electronically from the driver seat.

Sounds great in the morning during cold starts. But unfortunately you would hardly notice it while driving.

I have noticed that if I rev it hard at start up (not generally a good idea), the exhaust would get a few loud pops. Sometimes it does it under hard acceleration too, I may* have done it to scare some pedestrians in the city. Not sure if it would normally do it without the golf tee mod. Cheers!

How would the cops no?

"SIR PLEASE STEP OUT OF THE CAR. THE BUTTERFLY VALVE ON YOUR EXHAUST SYSTEM IS OPEN UNDER 3,000RPM"

Originally Posted by Panza

just pull the plug in the boot.
20 seconds, tops.

Throws a shadow code. Unless you have CANclear or a diagnostic cable, BMW will question you about this next time at service. That might cause them to delve deeper. Not worth the trouble.