2fcknfst

Click to sport everytine I get into it ...

What's start stop????

RadarP3C

I think all 991.2(s) reverts back to auto/stop on when you shut down. I have a 2019, so mine will revert back at shut down even if I have been in Sport or Sport+ continuously since start up.

I have read many times from forum members that they don't go into either Sport or Sport+ driving modes until warmed up. I'm always in manual mode when I start driving. Yes, I understand that if I'm in auto mode in Sport or Sport+, the shift points are at a high rpm. I can shift at low rpm shift points until warm up in manual mode. Is there anything harmful using this technique?

RadarP3C

Big Swole

Nah, I'm sure you're fine doing that...I've done that too as well...

My reasoning (no clue if valid), isn't just about the engine Op. temps but the tranny fluid temps and such. I figure leaving in auto mode in normal, with shift points being so quick / low rpm, that it gives the tranny time to heat up as well before increasing line pressures with Sport / Sport + modes.

Foosh

As I mentioned above, I suspected the Start/Stop default setting might be wired differently in other MYs and gens. In my '14 991.1 TS, default is whatever you left it on shutdown. Thus, if I disable Start/Stop in Normal mode, it's disabled the next time I start the car, and until I enable it again.

I see your car is a 991.2. I seem to recall in my previous '19 Cayman 718, it might have defaulted to always on in Normal mode the next time I started the car, but I'm not entirely sure. I was surprised to see that it's always off in the TS.

RadarP3C

Yes, I agree with you that the transmission should be warmed up also. With me shifting manually (in Sport or Sport+) at low rpms until all is warmed up, I think would suffice.

John D II

I installed the T-design memory module which saves all the settings when the car is shut down. I got tired of having to reset everything on every drive and the T-design works perfectly, every time. It just continues where you left off.

RadarP3C

Saves all memory settings on a 991.2 at the last shut down, i.e., start/stop, driving mode, radio, heat/air/fan speed, seat position, etc?

mffarrell

The 991.2 start/stop defaults to on (light is off) on startup same as my BMW M550, which I also coded the same as my turbo.

I coded the software so that it will remember the last known start/stop setting off (light is on). Like some here, I mostly drive in sport mode only after reaching operating temperatures. 50% of the time, I would forget to disable it, so that’s why I coded it. No fuss, no cost and maybe 10 minutes total to code after firing up the laptop and connecting the Piwis hardware and cables.

I think overall the start/stop can be dangerous on any car. I had one friend t-boned at an intersection, when his car wouldn’t re-start and the signal light changed. I had another friend whose car wouldn’t restart at a stop sign, and she had to be towed to the dealer. Also, if you actually use start/stop you will have premature starter and battery failures. On my BMW the auto start has its own separate battery.

John D II

Not all that, mainly the drive settings. I think the key memory will save seat position and heat settings, so between the two, most everything is remembered.

This is from their web page:

Design highlights:

- Console version remembers the last setting for buttons
[ Auto/Start/Stop ] [ PSE ] [ Sport ] [ Sport+ ] [AutoBlip]

- **** version remembers the last setting for the IOSS+ ****

- Installs in under 10 minutes

- Can be uninstalled as easily

- Designed and made in USA

So with the T-design module installed in my car, the car now remembers seat position and heat/fan settings from the key setting memory, then PDCC setting, auto start/stop setting and drive mode setting, such as sport+, etc from the T-design. I am not sure about the radio, I have that little Garlinkit android auto module where the phone goes right to the screen on the car like apple carplay when I start the car.

worf928

.1s (and 981) default to last setting for ***.

.2s (and 718) default to *** on at every start unless you code it.

Thank CARB for .2/718 behavior.

RadarP3C

Very cool. Thanks! Looks like this will be on my Christmas list.

pfbz

One of the (few?) clear advantages of a 991.1 Turbo over the 991.2!

On .1 generation cars, start/stop off is "remembered" between shutdown cycles... Press the button once and never have to press it again, unless for some reason you want to turn start/stop on. Without aftermarket modules.

onfireTTS

I had one here before my 991.2 Turbo S came off the boat. Quick install on day one and have never used that nonsense which is technically a battery killer and a starter killer. Our X5MC stays in whichever mode you leave it in as it should from the factory. Off stays off. Ironically, our 2024 HEMI Jeep does not have it at all. YES !!!!!

John D II

There are two versions of this, if you have a 991.2 then you want the IOSS version, it mounts behind the airbag. Here is a link to the install, it's very simple - plug and play. You will love it, it's a great tweak to the turbo.

https://t-design9.com/memory_module_knob_install.html