Originally Posted by SickFinga
It is a 2.5l, but it is based on M52B28 more than it is based on M50B25TU
Well, it's an M52. I'm just saying it's a detuned 2.5L, meaning it doesn't really compare to the M50B25tu, it was the replacement for the M50B20. It's single exhaust too (6-2-1), like the 320i.