If the other thread doesn't help, here's how I can get it to happen very easily:
Stay in 1st gear.
Accelerate a little past 2500 RPM (doesn't have to be quick).
Let off the accelerator and let it drop around 500 RPM or so.
Press the accelerator again and studdering shall commence.
Experiment with how hard you press the accelerator, and how far you let the RPMs drop. This happens in every gear, but it's very easy to tell in 1st. If I get it just right the car will go a bit crazy bouncing on its own for quite a while. I felt it happen in 5th today (the car just shudders at that speed). This also happens almost every time I downshift around 2600 RPM (most noticeable from 1st to 2nd).
Luke
