Discussion
APOLO1 said:
These new engines with the ITBs need to get through their “engine running in process “ (for me was around after around 4 tracks days on RS, and 1700 Miles on Speedster) as indicated via the blue light on start up, before they sound their best then they really come on song sound wise, based on my experiences.
Very true. My RS with OPFs and ITBs sounds way better than when it was new.Edited by APOLO1 on Tuesday 6th April 14:09
franki68 said:
Melvynr said:
The exhaust button on the GT3 is nothing more than a con.
I never use it normally but have tried it the last few times and I do admit I am wondering what it actually does ? paralla said:
What is the exhaust button promising but not delivering? Since you can't buy a GT3 without it I'm struggling to see how I've been conned by a button.
It promises to give more sound, the same as any valved exhaust.When you pull off with the exhaust button on the valves close straight away and dont come back on while around 3-4k revs, but , if you dont have the button turned on the valves will open at those revs regardless.To get the best from a valued exhaust you need a valve controller where you can open or close them at your will.throt said:
I was sure it did make a difference to the opening of valves above 4k
I double check that, as I say, mine is on virtually all the time.
Try it with it on like you do, then say turn it off doing 4k revs in third gear and turn the button on .Or keep it turned off and take her up to between 3-4k revs in third and you will hear the tone change.I double check that, as I say, mine is on virtually all the time.
Edited by Melvynr on Tuesday 6th April 16:05
throt said:
My 991.2 just gets better as it approaches 10k
This is the thing with guys not using GT's, they don't really get to know them.
I use to be, so what but think now what a waste.
Yes, I noticed that the last few outings out.Exhaust has got deeper , but engine seems to of loosened up , everything is more seamless and racey if that makes sense .This is the thing with guys not using GT's, they don't really get to know them.
I use to be, so what but think now what a waste.
Melvynr said:
It promises to give more sound, the same as any valved exhaust.When you pull off with the exhaust button on the valves close straight away and dont come back on while around 3-4k revs, but , if you dont have the button turned on the valves will open at those revs regardless.To get the best from a valued exhaust you need a valve controller where you can open or close them at your will.
I don't recall reading the detailed functionality of the exhaust button in the Porsche literature when the car was launched. What you think it should do and what Porsche say it does is not necessarily the same thing. If my understanding of it's functionality is the same as Porsche said it was I haven't been conned.paralla said:
I don't recall reading the detailed functionality of the exhaust button in the Porsche literature when the car was launched. What you think it should do and what Porsche say it does is not necessarily the same thing. If my understanding of it's functionality is the same as Porsche said it was I haven't been conned.
My using of the word conned was not a financial one as someone above said it comes as standard on the GT3.It does not do what it says on the tin, in my book that is a con.Out of interest what do you think an on and off exhaust switch should do.
Melvynr said:
My using of the word conned was not a financial one as someone above said it comes as standard on the GT3.It does not do what it says on the tin, in my book that is a con.
Out of interest what do you think an on and off exhaust switch should do.
Where's the tin? What does it say specifically? That's my point. Porsche never said the exhaust valves open when activated and close when not activated.Out of interest what do you think an on and off exhaust switch should do.
The button has a picture of the tailpipes on it and there is a red light to indicate it's been pressed. It doesn't say On/Off anywhere.
paralla said:
Where's the tin? What does it say specifically? That's my point. Porsche never said the exhaust valves open when activated and close when not activated.
The button has a picture of the tailpipes on it and there is a red light to indicate it's been pressed. It doesn't say On/Off anywhere.
Well you havnt said what you would think it would do if you pressed it.The button has a picture of the tailpipes on it and there is a red light to indicate it's been pressed. It doesn't say On/Off anywhere.
APOLO1 said:
Taffy66 said:
Very true. My RS with OPFs and ITBs sounds way better than when it was new.
The thing is if they made it any louder, it would be a problem on some track days. I had to short shift on few tracks in both 991RS and .2 GT3.Engine seems to have found a bit more too. It feels absolutely mental now.
I’m assuming the opf rs’s and speedster have the same exhaust flap mapping as the new 992. Apparently it is constantly varying for whatever reason. Emmisions or sound I assume. I did think the button was fairly useless on my car (idle aside) and I definitely thought the flaps were opening and closing with a mind of their own.
Edited by Spyder75 on Wednesday 7th April 09:47
Spyder75 said:
I’m 6k miles in or so. Half of those on jcr exhaust (filters back). The engine sounds unbelievable so those of you worried about sound don’t be. Worst case get JCR on the case.
Engine seems to have found a bit more too. It feels absolutely mental now.
I’m assuming the opf rs’s and speedster have the same exhaust flap mapping as the new 992. Apparently it is constantly varying for whatever reason. Emmisions or sound I assume. I did think the button was fairly useless on my car (idle aside) and I definitely thought the flaps were opening and closeing with a mind of their own.
I think you're correct regards the way the exhaust flaps operate on the RS WP and Speedster. The flaps are electronically regulated now and not by the Pse switch. They constantly vary during driving probably for emissions as you say.Engine seems to have found a bit more too. It feels absolutely mental now.
I’m assuming the opf rs’s and speedster have the same exhaust flap mapping as the new 992. Apparently it is constantly varying for whatever reason. Emmisions or sound I assume. I did think the button was fairly useless on my car (idle aside) and I definitely thought the flaps were opening and closeing with a mind of their own.
Cheib said:
All modern Porsche’s sound better after a few thousand miles. Whether it’s a Macan Turbo or a GT3.
I agree the above, on the 3.0 tt, ie the 991.2 GTS, and 992C2s cars they don't just sound better but feel like they have another 20bhp after 8-9k miles. But the point above is that with these cars with the ITBs and Filters, when new they do sound a little muted even more so on start up, but as soon as the Blue" running in procedure" light goes out its as if another map has opened up, the engine really gets its voice along with feels like it revs harder and faster. I take the point that the sound is not quite as loud as what was on the Gen 2 991 cars, but at no time do I ever feel that its lacking in sound. If the new 992 GT3 sounds like on the Speedster and Gen 3 RS I will be very happy.
Xfe said:
Some crazy high prices knocking around for top spec 991.2 GT3s lately. Shows how much the expected mass availability of 992 was causing downward pressure on prices. Combined I suppose with the very incremental improvements of the 992, 991.2 prices are rising
Certainly some high asking prices and not a lot of cars for sale....it might be more the demand for cars rather then specifics of 991.2 GT3 vs 992 GT3 to be honest. Time will tell ! Cheib said:
Xfe said:
Some crazy high prices knocking around for top spec 991.2 GT3s lately. Shows how much the expected mass availability of 992 was causing downward pressure on prices. Combined I suppose with the very incremental improvements of the 992, 991.2 prices are rising
Certainly some high asking prices and not a lot of cars for sale....it might be more the demand for cars rather then specifics of 991.2 GT3 vs 992 GT3 to be honest. Time will tell ! 
:Anyone panicking selling a proper spec 991.2 GT3 last Autumn unfortunately would now have taken a bath and don't think we have even started yet on achievable prices with lockdown easing Spring and the warmer weather together with track season fast approaching.
Main driver of these much higher prices is clearly the severely restricted number of proper spec cars for sale and relatively lukewarm reception thus far of the marmite 992 with the same engine as the 991.2 giving effectively no performance gains whatsoever but at a much higher price. How the unfortunate rapid spread of Covid throughout Europe specifically Germany further restricts the already limited number of cars being produced and availability for the UK remains to be seen but any probable cutback in numbers this will clearly drive prices of any 'used' /flipped 992s stratospheric which will in turn give a further boost to 991s.
The official roadtests of the 992 will certainly make interesting reading.
Gassing Station | 911/Carrera GT | Top of Page | What's New | My Stuff