Learned something new about my pdk
02-08-2010, 01:26 PM
#1
Race Director
Thread Starter
Learned something new about my pdk
I didnt know that the pdk actually shifts automatically in "M" mode.
Y'day while cruising on the fway I gave it more gas and the tranny kicked down into a lower gear.
I also noticed that when accelerating hard, again in M mode, the PDK will not upshift unless the engine is near the rpm limit.
Interesting, because I thot I had full control, unless of course my actions would damage the engine like going from7th to 1st.
tks
Y'day while cruising on the fway I gave it more gas and the tranny kicked down into a lower gear.
I also noticed that when accelerating hard, again in M mode, the PDK will not upshift unless the engine is near the rpm limit.
Interesting, because I thot I had full control, unless of course my actions would damage the engine like going from7th to 1st.
tks
02-08-2010, 01:37 PM
#3
Pro
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My wife's Audi TTS with DSG, does the same thing, not sure if I like that feature. I downshift it to about 4500rpm and full throttle it and it automatically downshifts to 5500rpm. I as wondering if the PDK did the same!
02-08-2010, 01:59 PM
#4
Race Director
Thread Starter
I dont recall if the setting was Normal, sport, or Sport +. I wonder if it makes a difference.
Im guessing the tranny does this for maximum performance???
perhaps in my 1st example above the car is thinking:" I'm cruising in top gear & my driver just mashed my throttle, so I gotta find a gear thats gonna get it done!"
Im guessing the tranny does this for maximum performance???
perhaps in my 1st example above the car is thinking:" I'm cruising in top gear & my driver just mashed my throttle, so I gotta find a gear thats gonna get it done!"
02-08-2010, 02:08 PM
#5
Nordschleife Master
BTW... it never happened to me. I guess I do not lug the engine.
02-08-2010, 03:02 PM
#6
Nordschleife Master
I'm betting at start up when the engine is cold, or not at full operating temp, PDK also limits what it will allow you to do shift-wise.
As far as lugging is concerned it will also show you how low RPMs can go when cruising without causing excess wear or damage. It'll probably surprise most guys.
As far as lugging is concerned it will also show you how low RPMs can go when cruising without causing excess wear or damage. It'll probably surprise most guys.
02-08-2010, 03:16 PM
#7
Rennlist Member
My bimmer actually has a kickdown switch at the bottom of the pedal. So if I floor the car, it will not downshift in M mode unless i push even harder to hit the switch. I think the PDK should be like that. Much more control that way.
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02-08-2010, 03:49 PM
#8
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I didnt know that the pdk actually shifts automatically in "M" mode.
Y'day while cruising on the fway I gave it more gas and the tranny kicked down into a lower gear.
I also noticed that when accelerating hard, again in M mode, the PDK will not upshift unless the engine is near the rpm limit.
Interesting, because I thot I had full control, unless of course my actions would damage the engine like going from7th to 1st.
tks
Y'day while cruising on the fway I gave it more gas and the tranny kicked down into a lower gear.
I also noticed that when accelerating hard, again in M mode, the PDK will not upshift unless the engine is near the rpm limit.
Interesting, because I thot I had full control, unless of course my actions would damage the engine like going from7th to 1st.
tks
I think thats how it works.
02-08-2010, 04:19 PM
#9
Three Wheelin'
Demystification
From the 997.2 Technik:
From the 997.2 Owner's Manual:
An upshift at the engine speed limit is
only accomplished if there is a kickdown in the engine speed limit range (panic shifting).
only accomplished if there is a kickdown in the engine speed limit range (panic shifting).
Kickdown
The kickdown function is active in selector lever
positions D and M.
For optimum acceleration, e.g. when
overtaking, depress the accelerator pedal
beyond the full-throttle point (kickdown).
The transmission shifts down depending on the
speed of travel and engine speed.
Upward shifts occur at the highest possible engine
speeds.
The kickdown function is active in selector lever
positions D and M.
For optimum acceleration, e.g. when
overtaking, depress the accelerator pedal
beyond the full-throttle point (kickdown).
The transmission shifts down depending on the
speed of travel and engine speed.
Upward shifts occur at the highest possible engine
speeds.
02-08-2010, 04:29 PM
#10
Three Wheelin'
I don't find keeping high revs necessary - it is somewhat of a mental battle but my SMG BMW helped get me used to it - especially when gas was knocking on the door of $5/gal for a month or so. I am still always astonished at how quickly this car will get down to business - zipping up from 2K to 5k before I can even think about it. No need to keep it "ready"; it is always ready!
02-08-2010, 05:29 PM
#11
Nordschleife Master
I do not allow the car to run in town at 30MPH in 6th gear. You are free to do so.
02-08-2010, 05:37 PM
#12
Rennlist Member
With my 2005 Tiptronic, manual mode would still downshift with throttle and upshift at redline. I wouldn't get full manual control unless PSM was turned off (it would then bounce off the rev limiter).
02-08-2010, 05:50 PM
#13
Race Director
Thread Starter
02-08-2010, 05:52 PM
#14
Race Director
Thread Starter
02-08-2010, 06:02 PM
#15
Nordschleife Master