e90 330xd N57D30A
Posted: 23 Jul 2026, 07:23
I'm converting my 2009 BMW E90 330xd xDrive N57D30A to an 8HP70. The car will be used daily. My target is 380-400 hp. The most important things for me are OEM smoothness in D mode and smooth city driving. Which 8HP70 code and calibration would you recommend?