[ric124]

First of all let me thank 1.fresh.f30.335 for providing some directions oh how to do this.

Step 1:

Get tools together; flat head screw driver and wire.

I bought this for like $4 because i couldn't find any wire and this came with wire.



Step 2:

Look at the spring that we need to remove.



Step 3:

Get flat head screw driver and place between spring and exhaust. Now twist and spring should fly depending on how big your screw driver is.



Step 4:

attack from other angle to repeat the above step for the end of spring which is attached to motor.



Step 5:

After Spring is removed twist the knob spring was attached to on exhaust side to open flap.

look down tailpipe with flashlight to verify.



Step 6:

run wire through the grove and tie around exhaust.


I also used some of the exhaust bandage from that package I bought to cover some of that wire.

[NiceNotRiceBMW]

What is this point of this?

[elistan]

To force the exhaust flap open for a louder exhaust note. Stand outside your car while somebody starts it - you'll hear it loud at first, then a clang as the flat closes and the exhaust'll be much quieter. The noise doesn't seem to make it into the cabin much, though.

[Roki_014]

isn't this only closed while the car is cold/started, once it warms up it opens up and stays open, i think the whole purpose of it is to warm up the car faster

[ocso1606]

This looks like alot of work!!! I'm just gonna spend the money on an exhaust system....

[ric124]

Originally Posted by Roki_014

isn't this only closed while the car is cold/started, once it warms up it opens up and stays open, i think the whole purpose of it is to warm up the car faster

Its actually open on start up listen and you can hear it on cold starts. Then it closes and gives you a silent around town drive. Once you start driving hard it opens up.

Cruise = closed
Speed = open

[ric124]

Originally Posted by ocso1606

This looks like alot of work!!! I'm just gonna spend the money on an exhaust system....

I didnt even jack the car up its pretty easy and can be done in under 10mins.

[ocso1606]

Does this throw any codes?

[ric124]

Originally Posted by ocso1606

Does this throw any codes?

nope because flap motor is still turning not knowing its really not changing anything

[TonyS]

Does this make an audible difference to the exhaust note from within the car?

[ric124]

Originally Posted by TonyS

Does this make an audible difference to the exhaust note from within the car?

the only difference is when you are cruising so instead of having just one tailpipe working per usual, you know have both so you can hear it cruising and when u back off the throttle car burbles more.

Full on throttle is the same since flap would have been open anyway.

[TonyS]

Originally Posted by ric124

the only difference is when you are cruising so instead of having just one tailpipe working per usual, you know have both so you can hear it cruising and when u back off the throttle car burbles more.

Full on throttle is the same since flap would have been open anyway.

Thanks. Might give this a try since it's easily reversible - I often think the exhaust note is just a bit too quiet. I'm also sad enough that I open the windows when I go through a tunnel or past a nice high wall so I can hear that lovely 6 cylinder growl. My wife thinks I'm crazy

[ZheHbKa]

whats the point of the wire?

[ZheHbKa]

this is a great mod, on my current car its a 10 seconds process of unplugging the rubber hose...bmw likes to complicate modding

[ric124]

Originally Posted by ZheHbKa

whats the point of the wire?

to hold the flap open.

[ZheHbKa]

Originally Posted by ric124

to hold the flap open.

Thanks!

nice write up!

[F30_Performance]

i have only put out the jack! i don't have any error, but it's no difference:

[Gugs]

Theres really no reason at all to rig a wire to your new bmw.

You you just unplug the connector of the valve while the car is OFF it will leave it open.

A lot cleaner and easier then rigging wire.

[ric124]

Originally Posted by Gugs

Theres really no reason at all to rig a wire to your new bmw.

You you just unplug the connector of the valve while the car is OFF it will leave it open.

A lot cleaner and easier then rigging wire.

yeh the only reason I did this way is because unplugging will show a code at service.

[AntBabeee]

So i did this. And after i did it. Apparently it wasnt tight enough, so there was movement down there. so i went back down to redo it. as i was taking off the wire to re-secure it again, i noticed that the too wouldnt line up if i decided to put the spring back in there. does the motor turn a bit more without the spring then it does with the spring (im guessing spring holds it back from going all the way) since there a grove in inside the exhaust to prevent the flap from going further then allowed.

If i look at the motor side if i were to put the spring on that side it wouldnt go in, the top of the spring wouldnt fit due to the bracket that holds the motor.

Can someone check to see if there is like that too? Has anyone tried to put the spring back?

[AntBabeee]

Originally Posted by ric124

yeh the only reason I did this way is because unplugging will show a code at service.

so unplugging shows a code at service, but doesn't show anything on the dash? Anyway to clear the code before service? also you can take a look at my post above. Thanks.

Also when the car is parked and turn off is it open or close?

[AntBabeee]

bump