991.2S loud "whoosh" high rpm full throttle
07-13-2021, 01:46 PM
#1
991.2S loud "whoosh" high rpm full throttle
I'm a relatively new 991.2S owner and my ride is making a very sudden and pronounced "whoosh" above 5,000 RPMs and heavy throttle. Specifically, it sounds like forced/rushing air but its not linear or graduated; rather, its very sudden. It doesn't seem to lose power but its a little disconcerting. Doesn't seem like a factory designed phenomena. I bought the car CPO so would assume its 100% OEM.
Is this normal?
Is this normal?
07-13-2021, 01:57 PM
#2
RL Community Team
Rennlist Member
Rennlist Member
Is your throttle application changing, such as you letting off the pedal?
07-13-2021, 02:11 PM
#3
07-13-2021, 02:43 PM
#4
RL Community Team
Rennlist Member
Rennlist Member
off the top of my head:
Traction control intervening, cutting throttle and bleeding boost
Wastegates opening (or closing more) to increase/decrease boost, as boost does climb up higher around those RPMS
Something totally normal like your wing raising up and the aero of the vehicle changing as a result (this happens at a vehicle speed, not engine speed)
without an example of the sound to hear the best anyone here can do is more or less randomly guess. The car is CPO -- take advantage of that and ask your dealer.
Traction control intervening, cutting throttle and bleeding boost
Wastegates opening (or closing more) to increase/decrease boost, as boost does climb up higher around those RPMS
Something totally normal like your wing raising up and the aero of the vehicle changing as a result (this happens at a vehicle speed, not engine speed)
without an example of the sound to hear the best anyone here can do is more or less randomly guess. The car is CPO -- take advantage of that and ask your dealer.
07-13-2021, 02:43 PM
#5
Rennlist Member
Turbo blow off valve?
07-13-2021, 03:15 PM
#6
off the top of my head:
Traction control intervening, cutting throttle and bleeding boost
Wastegates opening (or closing more) to increase/decrease boost, as boost does climb up higher around those RPMS
Something totally normal like your wing raising up and the aero of the vehicle changing as a result (this happens at a vehicle speed, not engine speed)
without an example of the sound to hear the best anyone here can do is more or less randomly guess. The car is CPO -- take advantage of that and ask your dealer.
Traction control intervening, cutting throttle and bleeding boost
Wastegates opening (or closing more) to increase/decrease boost, as boost does climb up higher around those RPMS
Something totally normal like your wing raising up and the aero of the vehicle changing as a result (this happens at a vehicle speed, not engine speed)
without an example of the sound to hear the best anyone here can do is more or less randomly guess. The car is CPO -- take advantage of that and ask your dealer.
A trip to the dealer is likely.
It looks as though you have a 991.2 ? If so, does yours make a sudden/loud rush of air noise above 5k rpms and full throttle?
Last edited by General Jack; 07-13-2021 at 03:18 PM.
07-13-2021, 03:17 PM
#7
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07-13-2021, 04:29 PM
#8
RL Community Team
Rennlist Member
Rennlist Member
Wing was my initial thoughts but I've ruled that out through visual observation. My other theories are blow-off value and/or wastegates, sounds turbo related but the volume of the noise doesn't seem like factory.
A trip to the dealer is likely.
It looks as though you have a 991.2 ? If so, does yours make a sudden/loud rush of air noise above 5k rpms and full throttle?
A trip to the dealer is likely.
It looks as though you have a 991.2 ? If so, does yours make a sudden/loud rush of air noise above 5k rpms and full throttle?
07-13-2021, 05:09 PM
#10
Could also be a boost leak.
07-13-2021, 05:16 PM
#11
Rennlist Member
Diverter valve?
07-14-2021, 12:18 AM
#13
These cars have a sound symposer that channels intake noise into the cabin.
It is most noticeable with the windows up and under heavy acceleration and deceleration.
Other than that, my S with PSE doesn’t exhibit the “whoosh” you describe.
It is most noticeable with the windows up and under heavy acceleration and deceleration.
Other than that, my S with PSE doesn’t exhibit the “whoosh” you describe.
