Oleg400

iTrader: (7)

"S2k N/A made that power ten years ago" e90post

TRDFantasy

It's a twin turbo engine and it's a 4 cylinder. Refinement will obviously be compromised and inferior to an I6 or even a V6, simply by design.

Plenty have been done before, but that doesn't make them necessarily great engines. A lot of the turbo 4 cylinders suffer from poor refinement, NVH problems, and turbo lag.

GM has an Ecotec LNF engine that makes 260 HP. It is a turbo 4 cylinder with a 2.0L displacement.

Mazda has a 2.3L turbo 4 cyl engine that makes 263 HP. Hyundai has a turbo 2.0L 4 cylinder engine that makes 274 HP. Mitsubishi has a 2.0L 4 cylinder turbo that makes 291 HP in the Lancer Evolution. Subaru also has several variants of a turbo 2.5L 4 cylinder in their WRX cars ranging in output from 265 HP to 305 HP.

Also several older engines made such power before, such as Honda's F20C 2.0L 4 cylinder which makes roughly 240 HP in the S2000.

MPLexus301

iTrader: (3)

That is my thought as well. Even a great 4cyl can't match a V6 in terms of NVH...let alone an I6. We will see how this turns out.

Blackraven

With upcoming stricter emission and fuel economy regulations (local and international), we will see more and more four bangers in order for car makers to make sense (or else they will face penalties and restrictions by government agencies).

Like it or not, I guess that's where we are heading.

OC 335d

I can imagine a simple piggy back tune will get this thing just as fast or faster than a 335i.

IS-SV

I have the same concern. Both Mercedes and BMW will have the same challenge with 4 bangers in US versions of C-class and 3 series.

Although I did extensively drive a 07 Mercedes C-class (previous gen) with 4 banger a few years ago and was pleasantly surprised by refinement and NVH. Sure the 6 is sweeter, but the NVH was more than acceptable, unlike most 4 bangers by other companies.

Initial B

iTrader: (2)

bring on the boost! My next car will once again be a turbo, and I'd like to at least have the option of it being a Toyota or Lexus. Get with the program asap Toyota, please.

Vladi

Well that 233hp 3.0L I6 is crap anyway so this cant be worse.

MR_F1

1995 JDM MR2 Turbo, 245hp
Evo IV-X, 276-305hp
JDM/EDM Imprezza STi, 276-304hp
Hyundai sonata, 274hp
etc, etc, etc

It's a single turbo. TwinPower is BMW speak for Divorced Turbine inlets, or twin scroll turbos (MR2 Turbo style). A twin turbo 4 cyl would be totally retarded. 2 cylinders would have a pretty hard time spinning up a decent sized turbo, or it's have to be two very small turbos.

I'm curious if BMW was finally able to marry valvetronic and direct injection.

I hope it's reliable anyway, would suck to see if have HPFP problems. I really have been hoping that the next gen IS base version would be 4cyl turbo, I wonder if Lexus has been planning it? This certainly makes a case for the idea.

LexFather

In Europe you could get a 2.0 Liter FQ EVO with 400hp. Suburu and Mitsubishi turbo 4s are damn near INDESTRUCTIBLE. BMW turbos, hit or miss in 6 cylinder form. The V-8 seems to be fine. Not sure how the I-4 will do.

Hope no HPFP issues.

OC 335d

Do you mean the turbos themselves or something else?

335D's don't have the HPFP issue.

bitkahuna

iTrader: (20)

exqueeze me? bmw has had 4 bangers for decades. does it also make no sense in HS250h and CT200h?

quoted for truth.

may not match a 6, just like a 6 can't match an 8, but what's the point? 4's will be needed to meet stupid u.s. cafe standards.

stay tuned for more euro madness transplanted here: taxation based on displacement and cylinders.

um, yeah, right.

OC 335d

You don't think they can make close to 300 hp/300 tq? They will also be lighter.

LexFather

The engines and turbos are rock solid and can hold huge amounts of boost. Hell the 3 series turbo is 15 years after the 2JZ I-6 turbo without the reliability issues with similar same HP ratings.

I am not so sure forced induction is the answer to everything as marketing is trying to sell us all.

OC 335d

I meant when you said:

"BMW turbos, hit or miss in 6 cylinder form. The V-8 seems to be fine. Not sure how the I-4 will do. "

Because the actual turbos are Mitsubishi td03-7t.