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Discussion Starter #1
and yes, I did search before posting this, but there's a lot of threads about PDK vs Manual and PDK off shifts, etc....... but I could not find this answer.

How do you downshift when in manual mode? Do you tap down each gear as you coast to a stop........ or do you just coast to a stop and let the PDK re-set itself into 1st gear?

I have been doing both - but it seems when I down shift, through each gear, it seems hard to pick the right speed to shift down and the car "lurches" each time I tap down.... would this be "rougher" on the transmission than just coasting to a stop?
 

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I've driven mine for all of 125 miles but I agree and have been letting the car downshift itself for the most part.


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Oh, no, no, no....by all means downshift aggressively using the paddles. Thats almost as fun as upshifting with the paddles. I pick up that a lot of people are really spooked about somehow "hurting" this PDK gearbox. Don't be. It's a race-hardened device that can take whatever the average city driver can throw at it.
 

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It doesn't make much sense to downshift into 1st. Let the car coast you to a stop and re-engage first. The brakes are for braking, and the transmission is for accelerating. As you approach a light that might change it's OK to go from 3rd to 2nd anticipating you may want the power as you hover over the gas.
 

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and yes, I did search before posting this, but there's a lot of threads about PDK vs Manual and PDK off shifts, etc....... but I could not find this answer.

How do you downshift when in manual mode? Do you tap down each gear as you coast to a stop........ or do you just coast to a stop and let the PDK re-set itself into 1st gear?

I have been doing both - but it seems when I down shift, through each gear, it seems hard to pick the right speed to shift down and the car "lurches" each time I tap down.... would this be "rougher" on the transmission than just coasting to a stop?
Just as with a manual, you should downshift as you are braking, it will be smoother and cause less drive line shock / lurching.
 

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Oh, no, no, no....by all means downshift aggressively using the paddles. Thats almost as fun as upshifting with the paddles. I pick up that a lot of people are really spooked about somehow "hurting" this PDK gearbox. Don't be. It's a race-hardened device that can take whatever the average city driver can throw at it.
Agreed! ;) So much fun. :cool:
Keep in mind you can shift up or down freely with it in automatic mode and it will take over for you when you want to stop playing.
 

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That's the feeling I get when I down shift at low rpms. It's even worse in sport+ shifting down at low rpms. The PDK likes to rev. when down shifting. Unless I intend to keep it above 3K I don't down shift manually. I let the car down shift itself in manual and upshift myself when I leave the light. Also the PDK shifts up slower if your at part throttle. But, when it's in Sport+ shifting at 5-7K with full throttle from a stop it shifts so hard that it sounds like it's back firing in between shifts. It does spin a little in first (thanks Goodyear) but you gotta love that sound. Sometimes I swear I'm driving a Cup car. GT3 wanna be. LOL

p.s. I was just at the F1 race in TX and you all have awesome highway roads out there at 80 mph. Here in MD we shift out of 2nd and we're breaking the law at 55 mph. Lame!

and yes, I did search before posting this, but there's a lot of threads about PDK vs Manual and PDK off shifts, etc....... but I could not find this answer.

How do you downshift when in manual mode? Do you tap down each gear as you coast to a stop........ or do you just coast to a stop and let the PDK re-set itself into 1st gear?

I have been doing both - but it seems when I down shift, through each gear, it seems hard to pick the right speed to shift down and the car "lurches" each time I tap down.... would this be "rougher" on the transmission than just coasting to a stop?
 

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If you're only talking about decelerating to a stop I think it's wasted effort to downshift through the gears on PDK, but if you like the sound and the lurching... go for it! If you're talking about enjoying your time on twisty roads or getting into passing situations then downshifting makes a lot more sense. After about 17,000 miles in seven months with my BS my sense is that the PDK logic is quite good and running it in auto or semi-auto works well in most situations. That being said, the "manual" mode is great when you want to get involved on a road you already know or can see situations like an upcoming passing lane that the PDK can't sense. I've found on most blind curves and hills that the PDK in Auto or Semi-auto will react better than I can; I'm referring to very tight turns on backcountry twisty roads... some without centerline stripes and more like 1 1/2 lane roads... think motorcycle sport bike roads.
 
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When doing spirited driving in twisties with sharp turns requiring some speed reduction, I down shift one or two gears depending on how much I am going to slow so that the car is in the right gear to accelerate out..........but when I am doing DD and using manual mode, I let the car downshift for me as I come to stops.
 

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Being my first auto car, I still have an obsession with making all the shifts. Add to that the sound the car makes downshifting, and I can't see any reason not too. Therefore, I downshift coming to a stop until 2nd then either pop it into neutral or let it do the last down shift. Going 2nd to 1st is a big lurch, hence I leave that out. If you shift higher up in the rpms (2-3k), it really eliminates the lurching, imo.

Coming into a corner hot, down shifting quickly and firing out of a corner upshifting makes me feel like a race car drive, I love it.
 
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Discussion Starter #11
thanks for the replies... I think I am gonna downshift myself for better control when driving and let the PDK work for it on deceleration to a stop.
 

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It depends on the effect you want. If you want the smoothest quietest down shifts, you probably want to let it do its thing, or learn how to shift at under 1000 revs. Manually down shifting to a stop smoothly and quietly is probably the most difficult thing about driving a Cayman.

If you want to have fun and make like you're an F1 driver, you can downshift manually when its still at 2 or 3k revs, you get really nice "VRAPP!" sound to accompany your maneuvers. If there's a pedestrian in the cross walk ahead of you, this is probably unwise, unless you want to startle/worry them.
 

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Even though the PDK is quite smooth, I don't feel comfortable firing a shift off mid-corner. Do the track folks agree?
 

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Pushing 10/10 through a corner, I wouldnt advise manual shifting. In auto mode the car will shift in corners without issue.
 

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I'm baffled by some of the responses. The PDK is the ultimate weapon for downshifting and engine braking which GREATLY enhances your ability to stop. The Auto Mode does it better than anything in history and is by far my favorite feeling when running hard on a track.

If you would like to do it manually, I suggest you practice what the auto mode does which is absolute perfection. So, after reaching 128+ mile per hour on a long straight, apply full brakes. That means push on the brake pedal with all your force until it reaches the firewall. Really. Then, watch the auto mode downshift and observe the RPMs at each gear and speed. You will feel the engine assist the anti-lock brakes with smooth but definitive engine braking. The net result is you will brake faster than almost all other cars in the world, even those with much better brakes. It is a major component of Porsche's Intelligent Performance concept to do more with less through better engineering. The PDK downshifts after coasting only as a preventative measure to prevent you from overloading the engine and stalling. Downshift as you like, it absolutely does not hurt the car!
 

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I'm baffled by some of the responses. The PDK is the ultimate weapon for downshifting and engine braking which GREATLY enhances your ability to stop. The Auto Mode does it better than anything in history and is by far my favorite feeling when running hard on a track.

If you would like to do it manually, I suggest you practice what the auto mode does which is absolute perfection. So, after reaching 128+ mile per hour on a long straight, apply full brakes. That means push on the brake pedal with all your force until it reaches the firewall. Really. Then, watch the auto mode downshift and observe the RPMs at each gear and speed. You will feel the engine assist the anti-lock brakes with smooth but definitive engine braking. The net result is you will brake faster than almost all other cars in the world, even those with much better brakes. It is a major component of Porsche's Intelligent Performance concept to do more with less through better engineering. The PDK downshifts after coasting only as a preventative measure to prevent you from overloading the engine and stalling. Downshift as you like, it absolutely does not hurt the car!
Awesome post boatman. Don't baby Caymans.
 

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I'm baffled by some of the responses. The PDK is the ultimate weapon for downshifting and engine braking which GREATLY enhances your ability to stop. The Auto Mode does it better than anything in history and is by far my favorite feeling when running hard on a track.

If you would like to do it manually, I suggest you practice what the auto mode does which is absolute perfection. So, after reaching 128+ mile per hour on a long straight, apply full brakes. That means push on the brake pedal with all your force until it reaches the firewall. Really. Then, watch the auto mode downshift and observe the RPMs at each gear and speed. You will feel the engine assist the anti-lock brakes with smooth but definitive engine braking. The net result is you will brake faster than almost all other cars in the world, even those with much better brakes. It is a major component of Porsche's Intelligent Performance concept to do more with less through better engineering. The PDK downshifts after coasting only as a preventative measure to prevent you from overloading the engine and stalling. Downshift as you like, it absolutely does not hurt the car!
Wow! Very interesting. Thanks for the insight. If only I still had my Boxster to attempt. Oh well.
 

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I'm baffled by some of the responses. The PDK is the ultimate weapon for downshifting and engine braking which GREATLY enhances your ability to stop. The Auto Mode does it better than anything in history and is by far my favorite feeling when running hard on a track.

If you would like to do it manually, I suggest you practice what the auto mode does which is absolute perfection. So, after reaching 128+ mile per hour on a long straight, apply full brakes. That means push on the brake pedal with all your force until it reaches the firewall. Really. Then, watch the auto mode downshift and observe the RPMs at each gear and speed. You will feel the engine assist the anti-lock brakes with smooth but definitive engine braking. The net result is you will brake faster than almost all other cars in the world, even those with much better brakes. It is a major component of Porsche's Intelligent Performance concept to do more with less through better engineering. The PDK downshifts after coasting only as a preventative measure to prevent you from overloading the engine and stalling. Downshift as you like, it absolutely does not hurt the car!
That was like reading porn. Thx.
 
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I don't force a shift lower than 2nd or 3rd. The bucking I get in traffic doing so sucks. However if I'm aggressive up to a light I can get down to 2nd, but into first is useless for me unless I'm below 5mph. I have been using manual mode more as it, well sounds like a Porsche for a change :)

If I 'California stop' the trans in manual will stay in second. Not really a bad thing but it lugs a little in the turn. To me this is better than banging 1st to just to 3500rpm or something semi-violent.
 

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For me, it all depends on my mood. I enjoy the car, sometimes loving the auto expertise, sometimes shifting myself and enjoying how well that works. I LOVE this car.
 
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