I have been having this problem since last summer and still can't figure what the problem is and what to do next to fix it.
when you are shifting into a different gear and release the clutch, sometimes it seems to slip and the rpm's stay up. This does not happen all the time just once in awhile. So we replaced the stock clutch with a spec stage III thinking this was the problem. We resurfaced the flywheel and replaced the bearings and cleaned everything and it is still doing the same thing. So it was not the clutch after all. I was thinking it could be the slave not disengadging fast enough but I have run out of solutions I need to get this figured out so I can go drag racing

Thanks in advance!!!

 

There is a valve/port in the slave cylinder that needs to be reamed out to allow more fluid to pass through. I don't have a M6 so may be someone here who does, can assist you in exactly what needs to be done.

 

Does anyone know of this mod????? or can help me diagnois my problem??

Thanks, Scott