First major problem...was going to install ecs tuning locking diff kit into N62 rear diff, but turns out the diff washers are too large.
While ecs tuning website says that the kit will fit X5 2005 N62, in reality it's made for medium diffs. And N62 has a large diff. Now that really sucks, the kit was very expensive. So I guess unless I run both front and read diffs from M54, I won't be able to use the locking diff kit.
But even if I find a way to use them, the rear diff might blow up lol? It's medium, so on N62 engine might be too weak
home of grace