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Depending on options, you can have up to three buttons on the bottom of the center console. From right to left:
- PSM Off button
- Sport button
- PASM button
PSM Off
All 987 have a button in the lower-right corner of the console labeled "PSM Off"
"PSM" stands for "Porsche Stability Management"
This button turns off traction control. You will almost never use this button--only maybe if you're on a racetrack. Even so, if the car detects excessive wheelspin or what not, PSM will turn itself back on automatically.
Sport
If you have at least one of a certain number of options, you will have a button in the lower-left corner (to the right of the PASM button) labeled "Sport". This button is multi-function:
1. If you have Sport Chrono, it will switch to the aggressive throttle mode, give a hard rev limiter and change the PSM limits to allow a little more wheelspin/oversteer.
2. If you have PASM, it will put the shocks into the hard setting.
3. If you have the Sport Exhaust, it will put the exhaust in the "loud" mode. Unlike PASM, there is no seperate button for changing the sport exhaust's setting--it is only controlled through the "Sport" button.
PASM
"PASM" stands for "Porsche Active Suspension Management". They should have chosen something that wasn't so close to "PSM".
If you have PASM, you will have a button in the lower-left corner that has a shock absorber icon on it. This is the PASM button.
The PASM button puts PASM on the hard or soft setting. Most of the time you'll use it on the soft setting.
Now, in your case, at the track, you'd probably just put things in the Sport mode and leave it at that. You could also turn off PSM, but I've managed perfect launches in just the Sport mode. Try both out and see what results you get.
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