Originally Posted by Dark_Knight_335
I am glad I held out for the N55 E92. No problems so far, nearly 9,000 on the clock.
N55 on one hand is more complex (has Valvetronic) and on the other hand is using cheaper components compared with N54 (use a cheaper solenoid-type injection system vs. piezo injectors in N54) to keep the cost/price down. The two Mitsubishi turbos in N54 have been replaced by a Garrett twin-scroll turbo in N55.... the rest of the hardware is the same.