FWIW, my mechanic--one of the best BMW only shops around NYC---suggested not doing the CDV delete.
The shop does Dinan installs so it's not that he's unconcerned about performance. I assume he knows more than me about such things, so I just forgot about it.
I did install a clutch stop which made a small difference, but honestly, the key to smooth shifts is good technique.
Last edited by avincent52; 11-10-2012 at 08:00 AM.