Puerto Rican is right.
I'm a E92 335D Euro version stage 2 (dpf off, BMC air filter) owner.
I am looking for an improvement, so I ordered this intercooler because it's great quality and my tuner thought there will be a minimum gain of 7hp in normal weather and maybe 15hp in hot weather.
I'm aware there is no data available, but I will take the risk. Wagner Tuning is quite famous, and I trust the quality of their products.
Whatever the results, I'll keep you update.