Scott997

Lots of posts on guys who "test drove" 991s. And comparing the shifts. I still have my 09spdk and 991spdk i live with them i know, i track, i drive the hell out of my cars. You guys prob had a salesmen right seat you dont do what i do. Theres a significant difference in the pdk. its ok if you dont want to upgrade or cant justify the bucks but please, because you did a 15 min test doesnt make you an expert. This is why i barely use the forum. Too many know it alls and posers.

Scott997

Yeh chrono sport plus in both.

slicky rick

reading these post sometimes its funny how it turn out to be. scott complained then thanks everyone and now says there is a difference and claims others as know it alls. its a forum brothers everyone can share hteir opinions.
funny how things turn out..
nevertheless i would like to share my experience with our brothers. have a sports chrono 997.2 pdk. driven the 991pdk on track and on roads. there is a difference of course. as with the new car come new upgrades. more responsive, those wonderful blips on downshifts on the track..of course that wonderful sound inside the car can influence the subjective assessment of the whole thing. i would say that the PDK on the 991 has improved but not to say that the 997.2pdk is obsolete. and i would hope that the difference between the 2 could be closer if only PORSCHE would realease a similar software upgrade to the 997.2 pdk. i would venture a guess that the technology is the same with the two pdk's with some materials differences to account for the weight and the biggest change would be the software controlling the clutches and the engine dme. would think that if the software of the 991 was placed in the 997.2 control unit both would work same way.

slicky rick

would think that some of the transmission covers now used magnesium instead of aluminum or other materials improvements. i guess one to the things porsche said to its engineers when devloping the new car is really loose weight. i think the tech on both cars are still very much similar like the dfi and pdk however the refinements like start stop, heat management, pdk software, etc create fuel economy and better efficiency.

rijowysock

Yes, but i am comparing both cars NOT in sport mode... so wouldnt that be apples and apples... i've been in sport chrono 997.2's as well... I am not retarded and comparing two diff cars.. the programming has changed.

slicky rick

997.1 to 997.2 was a revolution. 997.2 to 991 i think is more evolution

slicky rick

easy brothers hahaha..

rijowysock

thank you,

test drive and owning the vehicle is two totally different things, 16,000 miles in a 997.2 and 2000 in 10 days in 991... is a very good reference on whats what..

alexb76

How do they do that? Re-flash the software? Can someone request a new software? From what I've seen, the answer is no, unless you have a real problem.

Also, I can imagine that Software changes would definitely improve shifting, based on more data gathered over the 997 PDK lifetime, so 991 could potentially have a better software... for some reason though, Porsche doesn't proactively update old Porsche software, kind of softly pushing buyers to new models for improvements... I totally hate their business practice... on my Audi, I had my ECU re-flashed a couple of times (once by dealer, once upon request) and it definitely improved engine performance and fuel consumption (adjusted how turbos engage, as well as A/F ratio).

sandwedge

That's exactly what I heard from my dealer when I asked if there's such a thing as a PDK software update. "Do you have any problems with it?" They clearly prefer to leave the PDK alone unless there's a real issue. Fine tuning it and tweaking it for our enjoyment doesn't count.

rodsky

I know. Damn posers.

jakes dad

PTL..

I've arranged to have my 997.2 crushed and melted.... I don't want that POC to contaminate the 991's on the road...

We both know the truth...

JeanLouis33

Good morning all. Just joined.

Own 997 3.6l Turbo manual (my seventh 911). but all bought second-hand (I am not a millionaire )
I read with great interest the various contributions to this topic.
I have very limited experience of PDK, as all my cars were manual. But I drove a 991 for three days (rented it, actually, because I wanted to be quiet, no salesman...), and yesterday, I test drove a 997 3.8L Turbo with PDK.

And either I was in a bad mood, or... there is quite a difference between the two PDKs. The 997 I found jerkier and slower, even in super sport. And I remember loving the downshift "blip" with the 991.

trouble is: I can't afford the 991 Turbo of course, and I wonder whether changing my 2007 480bhp 997TT for the 3.8l 500bhp with "that" PDK is maybe a stupid idea... alternative: getting a 991S, but losing 80bhp does NOT appeal.

Any comments, anyone...? Thanks, and have a good week end.

JeanLouis33

Ok, Scott, I am only quoting the parts of your posts that are relevant to my question... You express yourself a little... forcefully, but with my limited experience of both .PDKs, I am inclined to agree with you.
Funnily enough, I went about it the wrong way round... starting with the 991.

I am/was an unconditional "manual gearbox" man. After a three days rental of a 991S PDK, I had to admit "I could get used to this". I liked it.

Yesterday, I test drove a 997 Turbo 3.8L PDK and I was SOOO disappointed... even in SuperSport, the feel is different, it is jerky especially from 1st to 2nd, not as fast as I remember the 991...

All in all, I must recognize that a very significant progress was made between 997 and 991...

...which does not help me, because I have a 480bhp 997, and I don't want a 400bhp 991S, and I can't afford a 991 turbo !!

JeanLouis33

Don't know whether it is just the programming, or technical changes, but there is "feelable" difference, I'm sure.