The change gave birth to the N63TU mill (aka N63B44O1) and went beyond giving it the Valvetronic system. When you check the list of modifications, it is clear BMW was trying to address the ...

The 2014-2016 model year got an updated engine known as the N63TU; the TU stands for technical update. Many of the issues from the original N63 such as bad timing chain tensioners, valve seals ...

However, it’s worth noting that BMW heavily revised the N63 for the 2013 model year, and this ‘N63TU’ engine is significantly less problematic. And though a dirt-cheap, poorly-maintained Alpina is ...

Unfortunately, even with all the meticulous care, my car has experienced the oil leak and smoking exhaust, just like all the N63 & N63TU engines through 2018 will experience this problem and the ...

Mind you, this refers to the N63 plants alone, the ones making 407 HP and it doesn’t include to N63Tu version, the one with 450 HP. On the latter, the issues were solved apparently. Issued as ...