Tupper

Ok, I’m newer to this forum so pardon me if this has been discussed before.

I’ve done internet searches on this but I’m not sure what to trust.

This button seems vague to me in what it exactly does.

So I’m going to do a launch control from Sport plus mode, do I get anything further for 20 seconds when I press this button?

What exactly do I get out of pressing this button that I’m not already getting out of being in Sport Plus mode?

Does anybody really know? Thanks

BIGWORM

I believe it will kick down the PDK to the best gear to pass in at whatever speed you are at. And it will allow some over boost. I dont think sport plus give you the over boost. And even if you are in sport plus, it might not be in best gear to pass in at that moment.

NI3

It's a mysterious button. Some have used it in conjunction with launch control.

I have a question about launch control Do you have to shift at all with PDK using LC? One reviewer seemed to think you do. 18:20 mark.

HouTexCarreraS

No. This guy is annoying.

aggie57

Pretty sure there's no over boost involved, from what I read when someone asked a similar question recently WRT to the lack of sport response in manual cars. Pretty sure all it does is the kick-down you mention and other than that it's mainly marketing. Perhaps in Turbo's it does give extra boost, and maybe the factory material I read is 'incomplete'. Happy to be corrected.

craig66

My understanding is that it kick you into the engine response settings that you would expect in sport or sport plus, drops you into the lowest gear it can at the speed that you are at and maximizes your engine all the way to redline before it shifts you into the next gear. My understanding is that it is essentially Launch control for cars that are already at speed. No I am not sure how that differs from a hard aggressive kick down on the accelerator or shifting the paddle shifters 2 or 3 shifts . I guess maybe the difference is that by kicking down you do have to continue with the action whereas if you push the button but change your mind you won't actually take off like a rocket.

NI3

Can't agree enough!

Tupper

Interesting, other sources I’ve read state that overboost actually is involved

Any Porsche engineers on this forum?

HouTexCarreraS

I remember seeing a video on the forum once that showed better launch control performance with the button pushed before takeoff.

Pad Bender

My understanding is that the SR button immediately readies the engine and transmission as if it were in Sport Plus x 20 secs.

There is definitely no longer overboost for 992 TT/TTS. Not sure if this is the same for Carrera models.

In the TT/TTS if you activate launch control in Sport and hit SR button...it kicks up the rpm by 1000 to same as Sport Plus. Hence stupid 2.2s 0-60 achieved by Car and Driver, as front splitter and rear wing were not deployed to cause more drag.

BlitzedTT

Edit: Sorry the video is not starting at the right point in time at about 4:43, where you see that "kick up"

Tupper

Based on the responses in this thread, it looks like there really is no consensus on exactly what that button does.

Thus, the mystery continues....

.2PDK

My SA told me it's specifically for wives who complain about our obsession.

I've tried numerous times to eject her but it failed.

It's in the shop now as this is a safety issue...

aggie57

Yep, and I reckon Porsche are being deliberately vague because they really don't want everyone to realise that all it does is raise the revs / drop down a cog or two. Hence not provided on manual cars 'cause that makes no sense if the computer is not shifting for you.

ryandarr1979

Just use the little diamond icon button on the dash to set the ejection seat.