Originally Posted by Benvette

This is from page 23 of The Manual Transmission Thread. Thanks to Green Dragon.

"Benvette, I know BMW came out with DME update (SIB 1220404) to address the "stumble" or "hole" in the throttle map. Mine was done in 2011. It helped a ton. You may want to look into that. The Jim Conforti Shark Injector reprogram sharpened the throttle right up and eliminated any residual lag of the fbw. I love my shark injector. I'm getting one for the wife's X3. Just a thought for you as well.

Also...check your disa valve---that can cause goofy stuff if that flap is well...flapping around."

I dont know if it applies to autos, but it might be worth a look.
Ben.