Originally Posted by
wsmeyer
I'm certain that the CDV performs exactly as the BMW engineers designed it to. It's designed to reduce driver fatigue by limiting the power of the release stroke. Of course in some situations this may result in negative side effects, but look at the myriad of perceived benefits of removing the CDV;
More predictable / non varying engagement point
As I've tried to explain above, with or without the CDV the relationship between the pedal position and the pressure plate is fixed and the engagement point will always be exactly the same. A varying engagement point is a very common problem, it's not the CDV though, it's caused by the pressurizing and equalizing of an air bubble in the line.
Easier low speed driving (parking)
I don't even know what to make of this one but I'd guess they are trying to describe this one ^^.
Second gear synchros almost always wear out first. This is because if you look at the ratios of manual transmissions, the biggest jump in ratio is almost always from 1st to 2nd and therefore the 2nd gear synchro does the most work.
If they are all balky, just 2nd seems worse, try bleeding your clutch line. If you have an air bubble in the line, when you press the pedal down the air pressure compresses the air bubble first, then it expands as it equalizes and engages the clutch. This means there will be a slight delay in pushing the pedal down and clutch engagement, because of the massive difference in mass of the air and pressure plate, the faster you push the pedal down the more the air bubble will be compressed and the greater the delay will be.