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      01-11-2010, 11:44 AM   #1
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Exclamation Officially announced changes to the 135i for 2011 (+ wallpapers)

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Officially announced changes to the 135i for 2011 (+ wallpapers)
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Changes to the 1-Series in 2011 confirm what has been widely speculated:
  • Engine change to the new TwinScroll Single Turbo 6-cylinder engine (N55)
  • 300HP @ 5800
  • 300lb-ft @ 1200-5000
  • Now with Valvetronic
  • New 7-Speed DCT is now optional
  • Optional Harmon Kardon sound system now available

Discussion on the topic of the N54 being broadly replaced by the N55 and the inclusion of DCT has been going on in the following threads:
http://www.1addicts.com/forums/showthread.php?t=339016
http://www.e90post.com/forums/showthread.php?t=338908
http://www.1addicts.com/forums/showthread.php?t=337295

PRESS RELEASE + Expand

Woodcliff Lake, NJ – January 11, 2010… BMW's EfficientDynamics philosophy continues with the 2011 135i Coupe and Convertible models which feature the company’s latest twin-scroll turbocharged 3.0-liter inline six cylinder engine. Both models will feature the 7-speed Double-Clutch Transmission (DCT) as an option.

The new six-cylinder (N55 designation) develops maximum output of 300 hp at 5,800 rpm, with peak torque of 300 lb-ft available all the way from 1,200–5,000 rpm. This is the same level of performance as the current 3.0-liter twin-turbo six-cylinder but with the innovation of twin-scroll technology and the integration of VALVETRONIC throttle-less intake technology, this new engine promises even better throttle response and even more fuel efficiency. Thanks to VALVETRONIC, VANOS, and the twin-scroll turbocharger housing, peak torque is reached 100rpm earlier than with the previous engine, and engine boost response is improved across the entire engine speed range.

In order to enhance the sporting character of the optional 7-speed Double-Clutch Transmission, the shift paddles now feature dedicated paddles for upshifting and down shifting. The driver now pulls the right paddle for upshifts and the left for down shifts. Manual shifts may also be accomplished via the console mounted e-shifter.

Harman Kardon Surround Sound System replaces HiFi System Professional as the upgrade sound system option.

The 2011 BMW 135i Coupe and Convertible will go on sale in the United States as 2011 models in Spring 2010.

Pricing

Full invoice and msrp pricing for the 2011 1-series -- http://www.1addicts.com/forums/showthread.php?t=347072


135i Coupe and Convertible Wallpapers

135i Coupe Montego Blue

135i Coupe Alpine White

Interior




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      01-11-2010, 12:08 PM   #2
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i still <3 my 2010
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      01-11-2010, 12:14 PM   #3
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is the DCT and SMG found i the M cars the same thing?
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      01-11-2010, 12:20 PM   #4
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No SMG and DCT are different animals, the SMG was a single shaft, single clutch, electronic clutch engagement gearbox. The DCT is a twin concentric shaft, dual clutch, electronic clutch engagement gearbox. The DCT will appear to shift more smoothly than the SMG for folks who are used to automatics. (The trick to making an SMG feel smooth is to lift throttle a bit between shifts.)
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      01-11-2010, 12:22 PM   #5
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SMG was a pain!
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      01-11-2010, 12:23 PM   #6
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Damn, the HK sound system sounds more interesting to me than the powertrain changes. Is that odd?
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      01-11-2010, 12:30 PM   #7
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I cant wait to feel the drive an N55 powered 1er. I'm wondering if I'll be able to tell a diff from the seat of my pants. One would assume its underrated as well.
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      01-11-2010, 12:30 PM   #8
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I hope N55 doesn't have HPFP issues /cross fingers
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      01-11-2010, 12:34 PM   #9
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Quote:
Originally Posted by oasis3582 View Post
Damn, the HK sound system sounds more interesting to me than the powertrain changes. Is that odd?
I am PO'd since I was under the impression that the upgraded sound system in the 1er IS Harmon Kardon.
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      01-11-2010, 12:34 PM   #10
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Quote:
Originally Posted by Ajumepke View Post
I hope N55 doesn't have HPFP issues /cross fingers
+1
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      01-11-2010, 12:39 PM   #11
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interesting how the N55 will compare to the N54
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      01-11-2010, 12:41 PM   #12
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I wonder what type of turbo they will use, whether it be mitsubishi or something else. Not that I have anything against our turbos, i think theyre great for what we put through them with chips and all.

Just curious if they use the same 'low inertia' design as the current twin setup. I can imagine the valvetronic will help with control lag greatly because of the fine control of the exhaust valve lift and timing. Maybe that can make up for the overall greater inertia of one turbo over two smaller ones.

Just speculating, but still would be cool to know more.
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      01-11-2010, 12:49 PM   #13
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great, they introduce the right shift up and left shift down for non M models as well!!!
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      01-11-2010, 12:53 PM   #14
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Just a thought....I am by no means an engineer, but could using a single turbo result in the power falling off relatively quick? I know with the twin turbo N54 the car is able to hold its power curve fairly well to redline.

Would a single turbo N55 contribute to a sharper power curve decrease towards redline due to lack of flow?

Thoughts?
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      01-11-2010, 12:53 PM   #15
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wow, happy to see what they are doing with the 1 series. It's awesome.. they aren't treating it like some "cheap" model
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      01-11-2010, 12:59 PM   #16
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Quote:
Originally Posted by marcel b View Post
great, they introduce the right shift up and left shift down for non M models as well!!!
This has been hinted at for months... it is welcomed!!
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      01-11-2010, 01:09 PM   #17
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Quote:
Originally Posted by Mark M View Post
Just a thought....I am by no means an engineer, but could using a single turbo result in the power falling off relatively quick? I know with the twin turbo N54 the car is able to hold its power curve fairly well to redline.

Would a single turbo N55 contribute to a sharper power curve decrease towards redline due to lack of flow?

Thoughts?
I also am not an engineer, but found this...

It it better for the turbo-spool up when it is only 3-cylinders that banging into the impeller. 6-cyl it to smooth if you understand what i mean. Why do you think the old Alpina B10 Biturbo had two turbos, and why does the new 335i have two. Toyota Supra, Nissan Skyline and so on.
I have a friend that is working on Saab. He is mapping the turbo engines for them, and he says it is a little bit better to have twin turbo on a strait six engine than just to have one. But like i said, one works good also, but maybe you will have little more lag.

Another thing is if you have one turbo with two intakes... then it is also best to have 3-cylinders in one hole and the other 3 in the other. So just donīt put all cylinders to one pipe.

But of course like you said, it is easier and cheaper to only have one turbo.
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      01-11-2010, 01:17 PM   #18
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Quote:
Originally Posted by d3l0n View Post
wow, happy to see what they are doing with the 1 series. It's awesome.. they aren't treating it like some "cheap" model
Ah- so you're saying they are treating the 335Ci like a cheap model because it retains the N54- at least for now? N55 with one turbo I would bet saves $. I'm not saying it will be a completely bad thing- 20kg loss is one clear positive, 10% greater efficiency is another. I do find it odd that some keep the N54, some get the N55. I'd venture to say the N55 will feel more like a boosted motor than the N54- ie it will have more lag- not a good thing. But if they fix the FP issues it will likely be an 'upgrade' that many N54ers would probably welcome.
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      01-11-2010, 01:26 PM   #19
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I would assume that it would have more top end and more lag, at least from what I have read.
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      01-11-2010, 01:26 PM   #20
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If I understand correctly, a twin-scroll turbo is not the same as a regular single turbo. It has two exhaust inlets? As opposed to 1. One being smaller than the other. This allows for the smaller one to be open during low rpms for boost to be engaged early on, and the larger one to open up later in the range to keep boost going to redline. So it essentially gives twin turbo like power in one turbo. Not sure how these will tune out, I think the turbo itself is tuner friendly since it's a big aftermarket turbo style and Subaru uses it in a couple of their cars as well. The thing that will fustrate tuners the most will probably be the valving technology.
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      01-11-2010, 01:32 PM   #21
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I'm kind of upset about this. I ordered a 2010 and got mine in september, had i known they were going to change to DCT / just for the harmon kardon i would have waited.... oh well i love my 1 either ways...
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      01-11-2010, 01:33 PM   #22
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I'm surprised that if they are offered the N55 with DCT in the 1ers, that they will continue to offer the N54 with DCT in the 335i and Z4. Just seems strange to me.
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