usctrojanGT3

Why did you choose the FVD PDK programming versus the Cobb Tuning PDK programming?

breljohn

Any updates?

Krokodil

Nothing too notable. The car is running very well overall and quicker on certain tracks. No issues with trans cooling, with the PDK using the larger BILT water/oil HX and the gear/diff using the former engine air/oil HX. However, with the objective of improving engine oil cooling we recently added a deep sump and remote engine oil cooler using the previous cooling configuration - large air/oil HX is back to engine oil and we brought the previous two-stage water/oil and air/oil HX setup back in service for gears/diff. First race for this configuration is the weekend at Spring Mountain.

We are still having braking issues, however, with the stock ABS system is just not capable of keeping up. We made a couple of configuration changes which helped, but we are still not where we were with the previous Teves motorsports system. The issue is that the yaw sensor is necessary for the trans to run in sport plus, but then the yaw signal appears to overload the ABS and degrades braking. We are working on a potential improvement this week, but may need to suck it up and go with a new Bosch motorsports system (working with a specialist who made this work).

Cheers,

Frank 993 C4S

The Bosch M4 System will be no different unless you use the wheel speed sensor splitters from the Clubsport.

Krokodil

We believe we have an alternate method, but this sounds easier. Do you have a part number for the splitters?

Frank 993 C4S

You will need to go through PMNA or a race team to get them. They seem to be hard to come by without a good justification. I tried and then gave up.

Krokodil

Understood. We may be able to source from PMNA. Do you have the PN? If not, I will try to pull the PN from one of the multiple Clubsports that should be at the track this weekend.

Cheers,

Hans Westerbeek

Hi @Krokodil ,

Awesome project!

I am very keen to find out if you ended up finding a solution for the ABS/PSM issue while keeping your Sport Plus mode alive?
Did you end up fitting a Bosch motorsport kit or did you do something clever to the stock ABS control unit?

I run a 982.2 Cayman S PDK with exactly the same issues...

Regards,
Hans

Krokodil

Hans,

We are switching to Motec to run the Bosch ABS / PDK combination. Testing is underway now. I will report back when complete.

Cheers,

981/911

This has confirmed much of what I have read. Which brake booster are you using? Did you change to a 3.5 and was it helpful in decreasing ice mode?

Hans Westerbeek

I’ve had a very reputable team trying to flash stock abs firmware with a version allowing psm-disablement with causing the faults, but it did not work out. They tried for days. It really is tragic that the 987.2 has no keep-button-pressed-to-disable-completely feature. I have to consider selling the car because of this or suck it up and put up another heap of cash for a Bosch Motorsport kit but I wonder why that wouldn’t also cause my sport plus to fail.

You mentioned Motec... What product are you referring to?

regards,
hans

Krokodil

We needed a Motec dash (C127) to properly communicate with the Bosch Motorsports ABS and the PDK. The Vision Motorsport team figured it out and it works perfectly - including the use of Normal, Sport, and Sport Plus modes. Having brakes again is wonderful.

Cheers,

Krokodil

Apologies for the delay. We run the 997 Cup Dual Master setup, so no booster. 987.2 "ice mode" which is less disruptive than 987.1 "ice mode" was still present until we switched to the Bosch Motorsport ABS. Now there is nothing but excellent brake and ABS control. In fact, I have been over-braking/slowing the car on corner entry and I am needed to re-learn how to roll more speed into and through the corner.