3-Pedals

Then this difference in sound is due to OPF? That doesnt make sense to me. I know engine is the same minus ITBs.

IORR

my 991.2 GT3RS is stock and it screams at 9000 RPM

Karl911

My 992 GT3 sounds like a cup car now. SOUL Race Exhaust 1st. -31lbs

3-Pedals

Been there done that. The mechanical symphony of the flat 6 disappears when your exhaust becomes too loud.

Karl911

Yeah it is loud. I know it will get old soon!

IORR

100% correct,
that's why mine is stock

Karl911

I still have a 991.2 GT3RS, with cat and resonator delete, with center muffle the sound is perfect.

3-Pedals

How does the RS compare to the 992 GT3 in stock form?

Soul Performance

I can see that, absolutely - been there done that as well. The 992 GT3 may be the car I've enjoyed as loud as possible the most. It's distinctly Porsche and super raw like a mechanical god screaming right behind you. As far as street cars go, that was automotive heaven for me. It's an experience every drive to say the least. Is it for most? No, but it'll be absolutely thrilling for some.


-Mike

p_uk

Can anyone provide noise (dB) comparison for 992 and 991.2 (either GT3 or GT3RS)?

Asking as I’d like to consider 992 GT3 as my next track car but where I live noise limits are super strict. 718 GT4/GTS are fine but 981 GT4, 991.1 and .2 GT3 and other cars get black flagged for excessive noise. So I’d like to know if 992 GT3 will be much quieter than 991.2

3-Pedals

I have lived with a similar setup for some time in my RS and while it is intoxicating to do this (having a setup like this), it gets intolerable pretty quickly. There is no way to start the car before everyone in the household and your neighbors wake up. Forget about waking up at 8 am and going for a drive before cyclists infest the beautiful county roads. Then there is the cabin resonance. This engine is unique in its resonance frequencies and at 3500 rpm, then at 4200, then at 5000 rpm there are these very strong resonances that will create all sorts of trim panels inside the cabin or switches or the airbag on the steering wheel or the steering wheel trim to buzz. It drives you crazy pretty quickly as you mentally try to avoid these RPM ranges by either driving it really at higher gears and keep rpms low or above 5000 rpm at all times. Then there is the sheer decibels. You will get easily 90+ dB in cruising and above 103 dB+ during WOT - inside the cabin. This is very very VERY loud and is bad for human ear. You have 20,000 tiny little hairs in your inner ear that detects sound waves and translate them into signals for the brain to process. Well those tiny hairs are very sensitive and you can and will permanently damage them causing hearing loss. After a while living with this system, I realized I had tinnitus for several hours post driving the car.

So yes, setup like this is cool for youtube videos and C&C or maybe if you are trailering the car to the track and wear ear plugs while driving but it is just not sensible for street driving.

Another problem is you completely lose the beautiful mechanical noises that engine makes inside cabin (aka the buzz saw).

There needs to be a way to make the 992 GT3 sound like 991.2 GT3RS - inside the cabin. I wish aftermarket companies focus more on replicating the inner cabin noise than making the exhaust louder. The exhaust noise isnt whats beautiful, its the mechanical symphony that is amazing with this engine. You basically feel like you are in an engine dyno room standing next to an engine as its running through various rev ranges. From the videos, 992 has a much more tamer/muted sound inside the cabin. Induction noise is louder but certain sounds are lost. I dont know if this is because ITBs or other changes in the engine or OPF.

PTS

Don't disagree with any of this but 99%+ of those paying thousands of dollars for an aftermarket exhaust are wanting louder than OEM. That's not to say they want as loud as possible, but it will be difficult to find an exhaust company that is designing a system specifically to mirror the sounds of a prior gen version of the same car. Your search will be a tough one.

Akrapovic will likely be your best bet if and when they release their version of the 992 exhaust. They always seem to be closest to OEM+ in terms of sound and volume

GoJoe244

I had a 991.1 RS and now have a 992 GT3. I like both as HPDE cars, but the 992 GT3 is faster around the track with a similar setup by more than a full second and it's all in the grip. Motor and brakes are very similar, grip on 992 is better. Same wheels, tires and brakes on both cars.

3-Pedals

Which do you like more for street? The faster car around a track is something that never ends.

street

A CDI got black flagged in his 991.1 RS with aftermarket pipes at our local track for being too loud last summer. The rest of us with OEM pipes were fine even with the loud button pushed. Our track isn't as strict as Laguna though.