[rouxeny]

It's been previously mentioned in the long BimmerCode thread, but I just did this and confirmed it. If you set "Start engine without clutch" to "Not active" then Rev Matching is turned off.

You can find this under

"Front Electronic Module" -> "Start engine without clutch" -> "Not active"

In addition to turning Rev Match off, the car now requires two pushes of the start button for the ignition to fire. The first push turns on the accessory mode. The second starts the engine. I also noticed that instead of being able to just lightly press the Start button to turn on the engine, it requires a slightly longer, more determined push.

I'm not sure if there are other effects.

Personally, I like Rev Match, so I went back to the "Active" setting.