So is the left foot on the brake or just half throttle with no brake?

Frank C.

 

^^^ Exactly. Mini launch!!!!

 

You don't need the left foot on the brake. Just put the right foot down at least half accel very quickly. If you don't do it quickly, the clutches will engage.

ChuckJ

 

I know everyone heard this crap before, but I just experienced it myself.
My car had kind of a bog at 2.5K, on slow roll out, as well as a slight delay applying power, with initial throttle tip in.
It felt unnatural, as if it was computer related.

Last weekend I did an autocross event, where it was back to back running and I must have did about 20 runs.
Since then, the car has no bog on slow roll out and power comes on instantly with initial throttle application.
The PDK is now so smooth it's like driving a different car.

I mention this because canyon driving and open tracking did not seem to recreate the conditions needed to bring about these results.
Apparently, the standing start and instant transition into super aggressive cornering, that is unique to autocross, was the key.
It seems like the ECU and stability control system needed to see this, in order to loosen up and let the car put down power, the way it should.

Perhaps this is worth a try, for some of you stumble sufferers.

 

Interesting concept. I don't have the stumble so I can't verify the finding. I can say this about AX and my experience. I run frequently during the warmer months. I do notice that the car drives much differently after the event. Tighter more responsive to power etc. It could very well be that the ECU adapts to spirited AX driving. Wondering how my car will be after the winter as I won't be driving very much if at all except to keep up the charge.

Frank C.

 

The head tech at Plano Porsche tells me that both the engine and transmission have "learning" capabilities, so that does make sense.

ChuckJ

 

I will have a stumble now and then. it acts like its trying to turn off at idle (say at a light), then when I depress the accelerator (green light) it stumbles. some times enough to POP my head back.
"my fuel saver is turned off"
"my sport is turned on"
its very noticeable when sport is turned off


Next time im at the dealership I will have them check it out.

 

Sounds like members are talking about two separate problems. A delayed throttle response from a stop as opposed to a misfire at 2500 rpms that occurs when running up though the gears at any speed. Has anyone with the second problem had it disappear temporarily after extended hard full throttle driving.

 

Good idea, that's not normal.

ChuckJ