991.2 PSE vs base exhaust
02-19-2017, 04:44 PM
#31
Rennlist Member
My understanding from my dealer is that on a non PSE car, there are flaps that open above a certain RPM to allow the engine to breathe better. These flaps are automatically controlled, and from your video, there appears to be some cracks and pops programmed in. With PSE in defeat position, regardless of how high you rev the engine, the flaps don't open resulting inquirer operation. Of course when you engage it, the exhaust note is much louder. There is a comparison on this forum of a PSE car being revved neutral as well as the example you provided of a non PSE car. I'm not sure where the thread is though.
My conclusion wa that a PSE car with the defeat button was actually quieter with the system on defeat than a non PSE car and louder with the PSE button pressed. I ordered PSE.
My conclusion wa that a PSE car with the defeat button was actually quieter with the system on defeat than a non PSE car and louder with the PSE button pressed. I ordered PSE.
Must be exciting to have your car in May, mine won't be delivered until August or September as I'm doing euro-delivery in June. Where in Canada do you live? I'm in Vancouver.
02-19-2017, 06:33 PM
#32
Drifting
I'm on the prairies. It will be a while until the snow melts here so a May delivery will be perfect. I test drove a C4S last summer that had PSE. I drove the car with the PSE and and off and didn't find it too noisy with the windows up in either mode. Compared to the 2015 Carerra base I test drove for a day the 991.2 with PSE is just quieter all around (road noise, engine induction noise and exhaust noise), which is a plus for me. I don't need the show (noise), I just need the "go" (performance). I know others feel differently as the aftermarket exhaust business is pretty active.
02-20-2017, 05:09 AM
#33
Racer
If you will be spending some extra $$$ on changing out the oval shape exhaust tips, might as well go with PSE and if you do think it's too loud, just set if with a click of the button. I like my C2 w/ PSE, for me the noise level inside the car isn't much different, but people do tell me that they think it's pretty loud when I come home later in the evening/night. I live in a community with many elderly/retired neighbours though.
02-20-2017, 09:03 AM
#34
Drifting
If you will be spending some extra $$$ on changing out the oval shape exhaust tips, might as well go with PSE and if you do think it's too loud, just set if with a click of the button. I like my C2 w/ PSE, for me the noise level inside the car isn't much different, but people do tell me that they think it's pretty loud when I come home later in the evening/night. I live in a community with many elderly/retired neighbours though.
02-20-2017, 10:03 PM
#35
Pro
I'm considering ordering a 991.2 C4 with MT, SC and PSE (have this combination on my Cayman GTS, and love it). So it gets quieter in sports + compared to sport? Sounds counter intuitive. I've gotten used to the crackles paired with auto rev matching...
02-20-2017, 10:07 PM
#36
Drifting
02-20-2017, 10:40 PM
#37
Wait the base .2 non-PSE has exhaust? News to me. The darn thing I test drove was so quiet, it was the single biggest disappointment about the car. PSE is a must in my opinion.
02-20-2017, 11:46 PM
#38
Drifting
02-21-2017, 12:36 AM
#39
02-21-2017, 09:38 AM
#40
Rennlist Member
Join Date: Aug 2016
Location: S Carolina coast & N Carolina mountains
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I now have 1050 miles on my 991.2 with PSE, sport chrono, and MT, and it seems to sound better today than it did from new. Maybe it's just my perception, but wonder if there is a burn-in period. When starting the car, I immediately put it in sport plus mode that eliminates the cackles but gives a nice exhaust note. I also tend to drive in lower gears to hear the note. At sixty-five in fourth gear, it sounds nice going down the parkway.
I seldom use 6th, and may have put it in the top gear once to try it. I think this car could easily be a five speed.
I seldom use 6th, and may have put it in the top gear once to try it. I think this car could easily be a five speed.
02-21-2017, 10:19 AM
#45
Rennlist Member
No, it doesn't get quieter. In Sport mode, you get cackles and pops when letting off the gas, and in Sport Plus mode you still get the nice exhaust note without the pops.