Was there a followup here? I too am wondering if the OP has had long term success or not.

I too run into this but only in specify conditions and only for 15-20 seconds.

My conditions
1. Car parked overnight in heated garage 45f. (It's an old garage so the temp has cycled from 35-45)

2. Outside air temp is between 0-25 F (silly cold)

3. Start the car with the garage door open. Starts great and idles smooth.

4. Put the car in gear and try to back up slowly with foot on brake (no gas pedal use) and I get random misfires.

If I take the car out of gear it smooths out. If I give it gas (to 1500) while in N for 5-10 seconds then try idling in reverse it stays smooth.

Only happens 1 out of 6 days so there is clearly another factor:

Maybe air temp has to be a close range and the sensors are confused by being warm in garage but outside combustion air is way colder?

Maybe related to how hard I drove before parking him night before ?

I am curious on the intermediate levers too however my idle smooths out so quickly.

Junkycosmos
2005 e53 4.8is

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2003 E39 530i
1992 MX5
2005 E53 x5 4.8is (sold)
1990 K75S (sold)