Yes, they have a piggyback solution for the 330e. See Ventura Tuning in the Netherlands. They have a standard solution but I will have it fine-tuned to my car. I did the same with my previous car. Search for 'ventura BMW F30 320IA' on youtube for the result.
My experience the 320i with tuning: I drove 80.000km without any issues. Average fuel consumption was 7.6 l/100km. I really used the engine to the max a few times every day and I drive normally rather fast. I always removed the piggyback before going for service. This takes about 5-10 minutes. For these reasons I expect a lot for the tuning for the 330e.
Current experience with my 330e: Great car, nice sound in 'sport', already very fast, silent, very convenient when driving electric. LCI version is really better than the initial F30 models. Electric range 25-27 km when not driving too fast. Driving above 90 km/h drains the battery fast. Let's see what the tuning will do....