Originally Posted by spadge

The N62B48 of the e53 was the same in those 2 years it was build, it is called N62B48A and has 360HP, the 367HP one is the N62B48B (sometimes also called N62B48TU) of the e60, e65, e70 for example.

https://de.wikipedia.org/wiki/BMW_N62

I know exactly because I own one of the last e53 4.8is (builddate 14/08/2006) and it has 360HP...

I found a BMW document some time ago where the changes between the N62B48 and it's succesor N62B48TU/B where listed, unfortunately I can't find it at the moment

Edit: this is not the document I'm talking about but it lists the changes also: http://www.meeknet.co.uk/e64/tis_rou...troduction.pdf