so you basically want it to bog. I am sure you can have a tuner do that as they probably did it trying to get what most people go for.

 

This car is not going to bog. Its still going to take off like a bat out of hell even 1-2 gears higher than the optimal. I just want it to be like every other car with a dual clutch transmission (Lambo, Ferrari, GTR, etc).

 

LOL which are all slower and havent changed since the 430. And not its not going to take off like a bat out of hell. Maybe faster than standing on a manual in 6th.

You do know why it kicks down right?
I guess porsche likes being the top dog and enjoys it when a 7 year old car can easily run with the 458 and the other options from the makers in its class, that are 7 years newer.
What I would do is dump the S and get the car that does what it does. When you stomp on it you can be sure you have the time to wave at the 911 blowing past you.

 

Hi all,

I am racing driver and during the last seven years I have participated in all racetrack events of the Porsche Club of Brazil (and others private track days), always driving Porsches with manual gearbox.

Recently I bought a 997.2 Carrera S PDK to drive in manual mode, but I did not like the PDK system shifiting gears up automatically, especially in the middle of corners, leaving the car without traction.

With a simple change in the accelerador control the car is now improved for track days (only upshifting). I removed the original kickdown switch and installed a fixed hand made part, with exactly the same measures of original piece.

The electronic pedal remains the full throttle, but stops before sending the signal to upshifiting. Now I can control the gearbox to use all 8K rpm of engine, using the paddle shifters steering wheel.

The system is similar the new 991 GT3 PDK-S without kickdown, and can to be installed in any model Porsche PDK.

I hope you enjoy

 

But now it is permanently disabled so you have to drive it in manual mode correct? Otherwise it won't ever downshift?

 

subscribed

 

I drive only in M mode, I like to feel the car on my hand. It loses the quick downshift in M mode (by pedal), but the D mode remains the same, downshifting when accelerating.

 

It will downshift in auto mode, but no longer in manual. Makes sense, but I've never seen an electronic part you can simply "eliminate" without causing other issues, usually a CEL. Interesting fix.


You don't lose the downshift in manual mode. I honestly really thought the same thing myself. If you have the car in manual in 6th and push the accelerator to the floor and then push the "kick down" button, the car will downshift as far as possible, probably 4th depending on your speed. Yes, it is stupid and the car is downshifting while in manual. Really bizarre. Not sure if Porsche thought of this as an added benefit or if it is a safety valve as suggested by someone else. It does make sense as a PDK clutch safety issue as you will deliver full boost torque at low RPM, which puts maximum stress on the pressure plate and clutch. Certainly not good for a PDK clutch.

I don't think of this as too big of a deal and wouldn't see this as a track issue. There is a pretty significant pressure difference between flooring the car and hitting it hard enough to trigger the kick down.

 

I did not find on the international market a software to disable electronically the kickdown function of PDK. There are several options for automatic models BMW, Audi, MB, etc., but not for Porsche PDK.

The kickdown switch of PDK is only a mechanical click, and I drove the car without this switch. I have no doubt that the upshift is generated by the end travel of potentiometer that control the electronic accelerator.

 

Kickdown 'click' switch.

 

Thanks for the info on this. You should make a write-up on how to remove it. The kickdown is a pain in the butt, especially when I want to just pass somebody in 4th and the car goes haywire and blows through 2 gears. Again, other dual clutch transmission cars DO NOT do this (GTR, Ferrari, Lamborghini, etc). Removing the kickdown feature is no different than what you can do with a 997TT manual transmission car. It is a dumb "feature" and I'm glad others are trying to find ways around it.

 

What happens if you just pull it out? Can you pull it out?

 

Well, the intention is the PDK be like a manual transmission car ... lol

I believe that manual is much better to drive on circuits. The car on my hand, not the system deciding what it wants to do.

The new technology is PDK, but I miss driving my ex manuals 997 GT2, 997TT, 993TT on Interlagos F1 Racetrack at Sao Paulo city.

To remove the accelerador pedal is just a philips screw medium size and disconnect the connector of the electronic system.

Sorry my English. Using Google Translator

 

In PDK, the kickdown button is a mechanical click (with spring, wireless) and its function is only the driver to know where ends the throttle travel, and begins the usual function of any kickdown.

I drove the car without this spring button and the function 'kickdown' remains the same. This function is controlled by potentiometer that controls the electronic accelerator and we have no access to it.

That is the reason to stop the accelerator pedal before it sends the 'kickdown' signal to electronic system.

 

Understand. So you've effectively installed a clutch stop for the accelerator pedal. Would be tough to just create one from stuff lying around.