I meant, if they are both connected to the same driveshaft, yet they can spin at different rates? Must be some sort of system involved, either gearing or clutches or something.
Did it have two exhaust's coming out the back, just underneath the hatch/boot? Sky blue colour?
If so, its a mk2. I've seen it IRL at a VW trackday me an my old man went to a few years ago. Fast as Fcuk, sounds awesome too. They did a twin engined mk1 also.