Hamann has a very good reputation in EU. One of the top tuners here. Compared to others, they are a little bit pricey. They work on a 380 hp / 500+ nm ( numbers are crank ) engine performance upgrade for the 335i since more than half a year. I gave them a ring about 3 weeks ago, still no timeline. I would not be surprised if they would come up with a piggyback finally
