Quote:
|
Bi-turbo, twin turbo, etc is mainly a marketing upgrade. It is not necessarily better than a single turbo.
|
Don't agree fella.
Alpina go to the trouble of engineering twin turbos for their B3 on the N55 engine. This engine has the flanges on the crankcase engineered by BMW for twin turbos, ready for the M3 and M4. Done properly, one would expect a quicker response from a two turbo solution.
The 325d has two turbos.
