The N44 engine in the 135i and 335i will be replaced for 2010 with a new N55 engine, a DI twin scroll single turbo. It also produces 300 hp and 300 lb/ft, but with a much flatter curve, and reduces turbo lag by a lot.

The N55 will live on in a new 335iS, with 340 hp and 332 lb/ft, with an overboost function increasing torque to 369 lb/ft. Choice of 6-sp manual and 7-sp paddle shifter. It will fit in nicely above the 335i and below the M3.

1/19/2010 4:24:47 PM

how about LSD for the 335is?

and i thought the N44 already had a super flat torque curve with almsot no turbo lag?

[Edited on January 19, 2010 at 4:28 PM. Reason : /]

1/19/2010 4:27:54 PM

Don't know about LSD (not much info has been released about it yet).

As for the torque curve of the N44, what I read says that some of the hardcore BMW enthusiasts complained about it not being flat enough and there being some turbo lag!

1/19/2010 4:36:43 PM

The N55 engine is more tuner friendly from what I hear, compared to the new single turbo engine.

1/19/2010 4:54:16 PM

You mean the N44.

Yes, and that's why they are going to make the 335iS for the enthusiasts who want to tune it.

1/19/2010 5:00:47 PM

saw a 135i in real life today. Little bit small for my taste.

1/19/2010 5:23:24 PM

N54 is the current engine, the new one is N55

1/19/2010 5:45:31 PM

Yup sorry... meant N54, not N44.

1/19/2010 5:51:11 PM

OKay the previous posts confused me. Yes, the N44.

I wouldn't mind owning one of these at some point, guess it'll be MY2009 or earlier

1/19/2010 11:52:39 PM

i saw 135i at the auto show, its amazing!

1/20/2010 12:27:27 AM

^^ why the change of heart after numerous posts hating on it?

1/20/2010 9:19:23 PM

hahaha, sorry my mistake. I guess my statement was too vague. OEPI1 posted about the new special 335i model. My comment was referring to the 335i. I could rock one of those if I had to get something somewhat practical.

1/20/2010 9:38:17 PM