Originally Posted by ghatter

EDIT: And yes, BMW uses that CDV, the idea being to prevent a driver from "shocking" the transmission if they drop the clutch at stupidly high RPMs. It takes some getting used to. Or some removal and replacement with a valve that's been drilled out.

Originally Posted by ghatter

Are you certain about that? From what I've read the upshift time in the ZF 8 speed that the F-Type uses is about 200 milliseconds. BMW's DCT has a shift time of about 60 milliseconds, since one clutch is already engaging the next gear before the current gear is disengaged. The torque convertor continuing to transfer torque doesn't really factor in as far as how long it takes to change from one gear to another.

Of course this is just what I've read online. I don't claim to be some kind of transmission engineer.

Originally Posted by F-typical

Hmm... On the E46 the valve just unscrews from between the hose and the pipe to the slave cylinder. Things may have changed in later models, but anyone selling modified valves for an E46 is taking the Mickey.