Interested in faster shifting in your Cayenne? Show your support here...
#61
05-10-2015, 07:37 PM
I agree that a DCT option in the Cayenne would be awesome, but just to be clear, I am not sure this is completely fair to the platform. Here are the main reasons why the new 2015 Cayenne's do not have PDK:
- Automatic transmissions are still much better at low-range traversal and power modulation offroad. This is much more important when you consider the high gear reduction of the transfer case.
- Cayennes have to be able to reliably tow about 4 tons, in addition to about 2.5 tons of base vehicle weight. That is a net of 6.5 tons or about 13,000 lbs! If the current PDK was used, it would simply overheat and slip.
- Smoothness of shift delivery is what MOST people want in their Cayenne. I, personally, place this very low on my priority. However, most people are not going for max performance in their SUV. Even though DCTs have come a long away on smoothness of shifts, an automatic transmission is still much better (which may change with time).
#62
05-11-2015, 07:57 AM
I agree that a DCT option in the Cayenne would be awesome, but just to be clear, I am not sure this is completely fair to the platform. Here are the main reasons why the new 2015 Cayenne's do not have PDK:
- Automatic transmissions are still much better at low-range traversal and power modulation offroad. This is much more important when you consider the high gear reduction of the transfer case.
- Cayennes have to be able to reliably tow about 4 tons, in addition to about 2.5 tons of base vehicle weight. That is a net of 6.5 tons or about 13,000 lbs! If the current PDK was used, it would simply overheat and slip.
- Smoothness of shift delivery is what MOST people want in their Cayenne. I, personally, place this very low on my priority. However, most people are not going for max performance in their SUV. Even though DCTs have come a long away on smoothness of shifts, an automatic transmission is still much better (which may change with time).
The fastest Porsches out there are either manual (or sequential) or automatic transmission. PDK has been the limiting factor for high HP 911 and Panamera applications.
Having said that will Scott increase the valve pressure and torque limit of the TCU in addition to firmer shifting? This can open the way to upgrade the tiptronic transmission with higher capacity clutches or 1 or 2 more clutch packs.
#64
07-28-2015, 12:42 PM
Join Date: Jan 2011
Location: (in my garage welding something vicious)
Posts: 1,505
Rep Power: 103 
Will call Scott today to see if he has any updates for us.
#66
09-16-2015, 05:31 AM
Join Date: Jan 2011
Location: (in my garage welding something vicious)
Posts: 1,505
Rep Power: 103
Very fair question.. thanks for asking. I talked to Scott yesterday. Apparently, there was a technical setback several weeks ago in regards to our TCU. Given how long this engagement has been on-going, I have asked Scott to comment here directly. Hopefully a resolution is not too far out.
#70
02-21-2016, 08:06 AM
I would be interested in a 958 TCU tune. Not sure if there's a way to increase the stall in 1st gear but I'd love to be able to do semi-boosted launches. In a perfect work - fill one of the dummy buttons near sport to enable a higher stall 1st gear launch.
#71
02-22-2016, 09:29 PM
Softronic has made gains and losses in this endeavor over this time and will be releasing a flash for TCU's. Several users have been on a testing basis yet have not commented on this process. We are considering costs in either providing new TCU's with programming or on an exchange basis per car.
We are looking at a release of it along with our flashing for the SDI6, SDI8, SDI9 and MED17 via the port with no DME removal. This will be a cost effective way to flash these cars anywhere at anytime with no internet and only a cable with our software.
We are looking at a release of it along with our flashing for the SDI6, SDI8, SDI9 and MED17 via the port with no DME removal. This will be a cost effective way to flash these cars anywhere at anytime with no internet and only a cable with our software.
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Softronic - Porsche Performance Software Tuning
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Cayman | Boxster | 911 | Cayenne
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Softronic - Porsche Performance Software Tuning
Faster than a speeding bullet.
Cayman | Boxster | 911 | Cayenne
Like us on Facebook for updates and promos
24HRS Daytona Winner programmed by Softronic!
Porsche Interseries programmed along with teamed owned Tudor and World Challenge cars in an exclusive with Softronic.
Porsche PCA racing binary check by Softronic for compliance.
#72
02-22-2016, 10:13 PM
Well Softronic - if you need a test subject I'd be more than willing to record 60' times, avg mpg changes or whatever else you'd use as a good gauge. I do, however, have a 2011 w/ the SDI9, which i hear is tricky. You guys are the pros tho. 
