Replace PCM in 2012 GTS
07-13-2018, 04:05 PM
#1
Replace PCM in 2012 GTS
I'm planning to go aftermarket head unit on my car (2012 4 GTS). I've done research and know what's involved NAVTV interface, etc.
My questions.
What functions do I lose as a result of ditching the PCM?
Are all the PASM/PSE/PTM/SPORT+ options unaffected?
Aloha and Mahalo for the help.
My questions.
What functions do I lose as a result of ditching the PCM?
Are all the PASM/PSE/PTM/SPORT+ options unaffected?
Aloha and Mahalo for the help.
07-13-2018, 04:26 PM
#2
Subscribing because I too am curious. One of my 'must have' items is steering wheel audio controls. On GM, I adapt/translate these or it's just spoken natively. (Obviously excluding some of their garbage systems.) I haven't had any luck finding anything here - or anywhere - about the steering wheel controls on 997.2's. And I'm starting to think Porsche only built like... 10 or 20 cars with them.
07-14-2018, 08:36 AM
#4
I replaced the PCM in my 09 Carrera last week. The only PCM functions I've lost are trip computer and song/radio info display to the cluster. Everything accessible by the selector lever on the steering column remained in place.
I've gained - Bluetooth (phone and streaming) Apple Car Play, Android Auto functions giving me Waze based Nav and control of Pandora, Spotify, music library from the head unit.
I don't have PASM/PSE/PTM/SPORT+ options, so can't speak to those functions.
I've gained - Bluetooth (phone and streaming) Apple Car Play, Android Auto functions giving me Waze based Nav and control of Pandora, Spotify, music library from the head unit.
I don't have PASM/PSE/PTM/SPORT+ options, so can't speak to those functions.
07-14-2018, 12:23 PM
#6
Track Day
I replaced my Head unit and amp in my 2011 C4S. I did not go NavTV route because you lose the ability to fade music front to rear. Small issue but didn't like the idea of losing it.
All of the PASM/PSE/PTM/SPORT+ options are unaffected. As Terp20854 pointed out you do lose some information in the cluster that I did not feel was important.
To retain Steering wheel controls I used the Paser Unican Model # CF0007UNUN11.
I did the install 100% myself. Took my time so that it could be easily reversed if someone wanted to put it back to stock.
All of the PASM/PSE/PTM/SPORT+ options are unaffected. As Terp20854 pointed out you do lose some information in the cluster that I did not feel was important.
To retain Steering wheel controls I used the Paser Unican Model # CF0007UNUN11.
I did the install 100% myself. Took my time so that it could be easily reversed if someone wanted to put it back to stock.
07-14-2018, 09:08 PM
#7
Nordschleife Master
Apologies for hijacking but what a stable, present and past 
. Am I right in assuming you prefer 997's over 991's? Just curious since one arrow after another seem to point in that direction. Not just in this forum but elsewhere too.
. Am I right in assuming you prefer 997's over 991's? Just curious since one arrow after another seem to point in that direction. Not just in this forum but elsewhere too.
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07-15-2018, 01:24 AM
#8
Yes sir. I only buy 997s. I consider them the best looking watercooled 911.
Last edited by thxbuff2001; 07-15-2018 at 10:09 AM.
07-15-2018, 09:49 AM
#9
Three Wheelin'
what head units are you all changing to or considering? I'm in the process myself, have a Pioneer AVIC-W8400NEX here to install in my 987.2
07-15-2018, 03:27 PM
#10
Rennlist Member
I just replaced mine with a pioneer mvh 1400nex and rather than use the Nav TV, I installed a 5 channel amp. I kept all stock speakers and lost the trip computer as well as song title in the dash display. I haven’t checked the function of the sport chrono, but the gauge should work - I won’t see the time in the dash though.
It it is great having Bluetooth, CarPlay, and some adjustability with the amp settings. The car sounds 100% better, even with stock speakers, so it was a worthwhile upgrade.
It it is great having Bluetooth, CarPlay, and some adjustability with the amp settings. The car sounds 100% better, even with stock speakers, so it was a worthwhile upgrade.
07-15-2018, 04:05 PM
#11
I replaced with a JVC KW-840BT and reused the stock amp - NON Bose car. I pretty much only use Waze so didn't have a need for integrated Nav in the head unit. So far I've been happy with it. I had the USB installed in the storage bin beneath the head unit and mic to the right of the steering column.
07-16-2018, 04:46 PM
#12