Originally Posted by ipse dixit

I mean if people believe that it works, what's the harm?

It certainly isn't harming the car.

It's sort of like that twitchy baseball player who, every time he's in the batter box, taps his helmet four times (2x on the bill and 2x on the dome), grabs his crotch, adjusts his belt, and spits two inches in the front of the plate, before he's ready to take the next pitch. Probably not going to help him biomechanically make contact with the ball, but heck, if he believes it helps, what's harm?

Originally Posted by 4 Point 0

The car is a bit of a moron for a few miles, until it relearns parameters. But it is a very fast learner.

Originally Posted by ZerOG

I hope that people won’t take this seriously because you are completely mistaken. The DIY reset isn’t the same as a full calibration, it only resets the adaptive portion in the shift time algorithm. The rest values are generally more enjoyable and it would have been better if Porsche didn’t even make it adaptive.

i do mine twice a year and the difference is very noticeable.

I also have access to a PIWIS 3 and have done the full calibration. This one will often fail and (as per dealership procedure) requires about 500 ml (+/- 100 ml) of extra transmission fluid to pass. Some dealerships drain it out afterwards and some just let the system evacuate it.

Bottom line, if you tried the DIY reset and it want noticeable to YOU, it’s either you don’t notice it or there was an error in the procedure you followed.