ChicagoSpeed996

great question. I would also like to know the answer. Tom of TPC can probably tell us. I know the PASM shocks for the different generations are different part numbers. But that doesn't mean the guts aren't the same just different tuning. Ask Tom from TPC and report back.

rickdogg82

The answer from Tom at TPC:
As far as the shock damping goes DSC is the equalizer for all 997's being that the DSC command range is up to 100% damping force whereas OE PASM command isn't. But there are mechanical stiffness compounded in by slightly stiffer spring and sway bars between .1 and .2 and then for those adding GT3 or TPC sway bars compounds huge stiffness... the short answer is yes for the damping alone.

I want it.

Wayne Smith

A friend with a .1 put in the DSC and was not satisfied ... but ...

His car was extremely lowered. There wasn't enough suspension travel to work with.

He worked with Tom and raised the car a bit. It is still lower than stock. I followed him yesterday on a spirited drive. The car performed great. We had three DSC boxes in our group yesterday ... one .1 and two .2s (my C4S and a GTS). We were all very happy.

Further to my earlier report, after yesterday's drive, a couple of things ...

1. Accelerating out of an apex, when the rear end starts to break loose, with the rear less compressed the suspension isn't bouncing and the throttle control is significantly easier.

2. We have a quite bumpy technical road that includes an angled launch pad that kicks the rear end into the air and to the right at speeds somewhat over legal freeway limits. I'm used to the rear end coming down and flip flopping right to left to right to ... about three or four times. Yesterday the rear end planted and the car went straight.

I will load stiffer parameters once I get to interfacing the software to my Mac (running parallels). But that's me. As the controller comes, well, I'm impressed.

balefire

Another dumb question. Can you install the DSC on a 997.1 without the third accelerometer? If so, is there still a benefit?

ChicagoSpeed996

you would have to ask Tom at TPC (on this thread), but I believe the answer would be that there would be little to no benefit as it is looking for the three axis values.

ChicagoSpeed996

you would have to ask Tom at TPC (on this thread), but I believe the answer would be that there would be little to no benefit as it is looking for the three axis values.

here's his quote from another thread. As suspected. They will go to full stiff without the accelerometer



With either the front or the rear mounting location of the accelerometer, it will only work when the fours wires connected properly. The four wires are:
1. Power
2. Ground
3. CAN +
4. CAN -
If any one of the four wire is not connected properly than the lack of signal will default the DSC to command the shocks to go full stiff in the same manner that the stock PASM system goes to full stiff when a connector is off.

Here is a youtube video to demonstrate the signal output of the accelerometer-

Here's a better image of the test table-

Tom@TPC Racing

On all 997.1 cars that are non-turbo(including Carrera S, 4S, and GT3/RS) there's no benefit by installation DSC without our 3-axis accelerometer. These cars must have our 3-axis accelerometer in order for DSC to work properly. Its not hard to install, only 4 wires to attach.

Sneaky Pete

Tom......I have the goodies. This may have been asked before so sorry if it has......what is the optimum position of the 3-axis accelerometer? In the back or on top of the existing 2-axis?

Tom@TPC Racing

I have tested both front and rear mounting locations of the DSC 3-axis accelerometer on my personal .1 car with exact same performance. There's no performance advantage between the two locations. For cars with roll cage its definitely easier to mount it to the front than the rear.

Sneaky Pete

Great! Thank you Tom!

drockzcity

I just installed mine this past weekend in the rear of the car. The wire space back there is easier to work with and more room for soldering work and mounting. I have mine under the plating on the rear passenger side. Pretty easy job overall, should take you an hour or so.

Sidenote: Double check your CAN wire color codes with the instructions sheet. I forget which CAN wire it was but on my car it was Brn/Blk instead of Ylw/Wht.

Tom@TPC Racing

Thank you for your input.

Regarding the sidenote on the factory CAN wire colors, for whatever the reason is, every 997.1 that I've worked on has Yellow/White CAN Hi and Black/White CAN Lo wire colors. But I have heard of a few installer reported that the CAN Hi is a different color. However, the factory workshop manual does state Yellow/White for CAN Hi. Perhaps the OE wiring vendor ran out of the specified color and made a substitution.

Tom@TPC Racing

Did you confirm that this Brown/Black CAN Hi wire is on connector D,
pin 36 of the ECU connector? I'd recommend confirming the pin assignment when the wire color deviates.

drockzcity

Yes I did. I double checked everything before even stripping the wire down to splice it. I even used your original DIY write up from when you installed the DSC into your GT3. Everything works perfect. Money well spent. Thanks Tom!

Tom@TPC Racing

Well done, Sir!
Glad you like the DSC performance.
My pleasure.