New 335i Turbos

Not sure where I got the information, But the newer 335i are single turbo's? what year did they start doing that? I think it is now a option for a twin turbo?

The twin turbo engine is called the N54 it was a 3 liter in line 6 with double vanos. The new engine called the N55 is a 3 liter with double vanos, and valvetronic. The N55 uses a single turbo with twin scroll technology. Both engine produce the same power. I believe the N55 started in the 3 series in late 10 production vehicles.

I thought I read somewhere that you could still get the N54 as a option? Is that correct?

We still have some vehicle's that have the N54 in them but in the 3 series they are no longer avaliable.

The 2011+ 335is still has the N54 in it. Other than that all 2011 and up 355's have the N55.