PDK - Differences between models

[hondansx]

We have three Porsches with PDK, a 997.2 C4S, 997.2 Turbo S and a newer Boxster S.

I'm guessing, despite being 7 speed PDKs, there are a numerous changes, particular with the Boxster being a newer generation car. However, I am a bit worried by the Turbo as when i go from neutral to drive there is a big 'THUNK' which is nowhere near as bad in the C4S. Just generally, it doesn't feel as crisp, almost like clutch slip. The Boxster's gearbox/change is considerably better than the older 997s.

I've taken the Turbo to the OPC and had a software update but the difference is marginal. So is it just me being paranoid? Of course, the Turbo has masses more torque, so maybe that's the side effect of having beefier internals?

Interested to know your experiences.
Thanks.

[Magic919]

Can you try another 997 Turbo? I've never driven one, but have 997.2 NA cars and tried 981 loaners and I'm surprised. Maybe the 'box is faulty?

[av185]

PDK boxes can differ substantially from one car to another even of the same age, mileage, use and model. Generally speaking the newer the PDK, the 'sweeter' and quicker the change

Every PDK 997.2 I have owned and driven has had the trademark 'thud' on idle when moving gear, particularly into neutral. This is perfectly normal.

Currently using a new Cayman S PDK in which the box is much quicker than the 997 Carreras, also throttle blips on downchanges....

[hondansx]

Thanks, that makes me feel a bit better then!

Yes, wish the other cars had the blip. Do any aftermarket tuners remap the PDKs to do this?

[FeelingLucky]

I also have a 7TS and it definitely DOESN'T go THUNK when moving from N to D and back.

[hondansx]

Strange... was in the C4S over the weekend and it did it a couple of times. Out of interest, what year is yours and are you aware how up-to-date the software is?

[FeelingLucky]

2010 and no idea.

[Kananga]

Fwiw, I have a 997.2 C2 and haven't noticed any noises.

[IREvans]

hondansx said:

We have three Porsches with PDK, a 997.2 C4S, 997.2 Turbo S and a newer Boxster S.

I'm guessing, despite being 7 speed PDKs, there are a numerous changes, particular with the Boxster being a newer generation car. However, I am a bit worried by the Turbo as when i go from neutral to drive there is a big 'THUNK' which is nowhere near as bad in the C4S. Just generally, it doesn't feel as crisp, almost like clutch slip. The Boxster's gearbox/change is considerably better than the older 997s.

I've taken the Turbo to the OPC and had a software update but the difference is marginal. So is it just me being paranoid? Of course, the Turbo has masses more torque, so maybe that's the side effect of having beefier internals?

Interested to know your experiences.
Thanks.

If it makes a 'thunk' when going from N to D or R, then sounds like the clutch isn't fully disengaged, and is dragging a little. They should be able to see this from diagnostics at the dealer. Ask to drive a similar car at your dealer, just to satisfy yourself that the 'thunk' in your car is normal.

I've had a 2013 Cayman S PDK, and a 2014 C2S PDK. Both these cars have creep, so when you release the brake with no throttle, the car creeps forward, but neither car 'thunks' when engaging D from N

I also have a 991 GT3, no creep on this car, so low speed manouvering is tricky, but again, no 'thunk' when engaging D.

Is the amount of creep (ie low speed moving with no throttle) consistent with all 3 of your PDK cars, or is the creep of the 997 turbo faster..? Reason I ask is that creep is essentially a partially engaged clutch, and is a good indication that the clutch self adjustment is correct.

Hope your dealer either fixes it, or satisfies you that all is well with your car