I bought a 2006 997 carrera 4s about six months ago. From the beggining i noticed that after some hard driving the clutch pedal couldn't return back to normal possition after a gearchange. When i bought the car i asked the dealer to install a new clutch on the car at the local porsche dealership and he did it for me. I took the car to the dealership again to have this issue checked amd they told me everything was fine.

Lately i replaced by brakes in favour of larger GT3 brakes. Now i it is obvious to me that after heavy braking the clutch pedal is affected.

I believe there is something wrong either with my master cylinder or slave cylinder. Did anybody else had any similar issues?

 

since they share the reservoir, air in the system on the clutch side maybe...? i know a couple others that traded up to larger front brakes (and/or a GT reservoir) with no issues.

good luck and please post your solution when you get it fixed.