PcarFL

What is this "boom" on upshifts that i hear a few of you speak of??? I dont ecperience that on mine.

SamFromTX

Try driving full throttle (all the way) then upshifting between 6-7K RPM. I think this is where it is most noticeable.

A430v

+1 to the above. You're not driving it fast enough.

doubleurx

Sport exhaust button on and any hard throttle up shift above 4000 rpm gives you the noticeable boom.

race7117

Higher RPMs definitely get a "pulling the pin" type of feel not as much as the old SMGs but it's still there....love it

PcarFL

I have a lot of seat time in the car at all varying engine speed and in many conditons... Dont hear anyihtng that I would consider a "boom." I do love the screatching sound of the engine btw 8500-9000 rpm. That is a very distinct sound! Does anyone have a good sound clip of thie "boom?" Maybe something is up with my car.

doubleurx

Do you hear any difference with the sport exhaust button on? Some folks had an issue with a stuck flap that didn't open.

sgroer

Yes - you gotta drive it, man!! ;-)

The car upshifted with such fury this morning (temp 47 degrees) that it got the rear end a little loose. Frickin fun!

sgroer

I'll try to capture it. I don't think it's possible though. It's like trying to see a unicorn.

RFGGT3

I have just over 500 miles on mine. I thought I had a problem with the PSE; it would come on without the button being engaged and sounded different when changing gears and rpm's. I had the shop foreman and a master tech at the dealer go over it this AM. The system is fine. They explained to me that the GT3 PSE is not like any other 911 or any other Porsche car with PSE that I had ever experienced.
It is managed by the car to open by itself fully or partially. When the button is pushed to actuate the PSE the car will still adjust it . All due to the speed of the transmission and the much higher RPM capability of the car.
You want to hear the boom; floor the car in second and shift under power at 7500.

SamFromTX

It's more like a loud pop than a boom. it doen't happen at high RPM, try shifting lower to hear it.

PcarFL

Seems like we all hear it in a different way... I also notice that the car doesn't have the exhaust overrun like the sports exhaust on the regards 991 with sport exhaust. It is an odd coincidence how they did away with on the Speciale exhaust compared to my previous 458 which made a glorious overrun burble and pop.

doubleurx

PcarFL

That slight exhaust overrun heard outside car in that video is definitely not heard inside my car...

doubleurx

You should hear it inside. Mine sounds exactly like this video.