My Bov Noise Randomly Changed

[camdawgs]

Hay just trying to figure if their is something wrong with my car or if anyone else has experienced the same problem

I drive a 06 BF F6...6 spd auto

No modifications

Those that have driven/drive these vehicles will know the lil trick of releasing the accelerator at the right time and generally changing gears will give the BOV a little flutter...as standard...

ive owned the car about 2 years and this has been the noise I have been hearing until 2 days ago

As I pulled out a shop carpark I accerlerated and released for abit of a wank factor and it made the big PSSSSSSSSTTTTTTTTTT noise that all the Jap cars make when they drop boost between gears.

I checked when accelerating normally and changing gears manually, in performance and in normal drive and unless I take my foot of the accelerator the car does not lose boost between gear changes.

Now I LOVE this sound so much better than the original flutter...but my questions is how this may have randomly happened and could this be a problem or causing any damage to the vehicle?

[Wenier]

Someone has installed an aftermarket BOV when you weren't looking.

Check the recirculation pipe from the BOV to intake is still connected, may have come off and is release to atmosphere.

[furiousgibbon]

I had a boost hose split (the joiner into the throttle body) when I was on a track day. The recirc valve noise went from a flutter to a 'tsssh'. As it got worse I noticed the drop in boost pressure/power, but at first it just sounded different and didn't affect performance.

[F18XRT]

Bump.

OP How did you go with this? Currently having the same issue. Cheerz