n55 vs n55HP - How do we get that extra power and torque?
I see that the N55HP has 13 more hp and 30 lb/ft torque vs the standard N55 in our F10. The N55hp comes in the 2012 and newer: F12 (6-series), F21 (1-series) & F01 (7-series).
Anyone know exactly how this power is achieved and if we can buy some OEM parts to obtain the extra power and torque of the N55HP?
2011 535i Sport (Prem 1, 2)