![]() |
![]() |
![]() |
![]() |
|
![]() |
Post Reply |
|
Thread Tools | Search this Thread |
01-11-2010, 11:44 AM | #1 |
Administrator
7185
Rep 4,203
Posts |
![]() ![]() Officially announced changes to the 135i for 2011 (+ wallpapers) ![]() Changes to the 1-Series in 2011 confirm what has been widely speculated:
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
Pricing
Full invoice and msrp pricing for the 2011 1-series -- http://www.1addicts.com/forums/showthread.php?t=347072 |
01-11-2010, 12:08 PM | #2 |
Networking Geek
![]() 26
Rep 334
Posts
Drives: 2014 Subaru STi 5dr
Join Date: Apr 2008
Location: Pembroke Pines, FL
|
i still <3 my 2010
![]()
__________________
![]() |
Appreciate
0
|
01-11-2010, 12:20 PM | #4 |
No longer moderate
![]() 336
Rep 4,401
Posts |
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.)
|
Appreciate
0
|
01-11-2010, 12:22 PM | #5 |
Major General
![]() ![]() ![]() 4472
Rep 7,590
Posts
Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland
|
SMG was a pain!
|
Appreciate
0
|
01-11-2010, 12:23 PM | #6 |
Lieutenant
![]() ![]() ![]() 147
Rep 582
Posts |
Damn, the HK sound system sounds more interesting to me than the powertrain changes. Is that odd?
__________________
Current: 2021 BMW X3 M40i
Previous: VW GTI, Tesla Model 3 LR, Mazda MX-5 RF, Ford Mustang GT (x2), Mazda 3, BMW Z4 sDrive35i, Acura TSX, BMW 135i, Acura TSX, Honda Accord Coupe V6, Acura RDX, Pontiac GTO 6.0, Pontiac Grand Prix GTP |
Appreciate
0
|
01-11-2010, 12:30 PM | #7 |
First Lieutenant
![]() ![]() 55
Rep 305
Posts |
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.
|
Appreciate
0
|
01-11-2010, 12:34 PM | #9 |
Major General
![]() ![]() ![]() 4472
Rep 7,590
Posts
Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland
|
|
Appreciate
0
|
01-11-2010, 12:34 PM | #10 |
Major General
![]() ![]() ![]() 4472
Rep 7,590
Posts
Drives: '19 M2C
Join Date: Jun 2007
Location: Chicagoland
|
|
Appreciate
0
|
01-11-2010, 12:39 PM | #11 |
Brigadier General
![]() 156
Rep 4,528
Posts
Drives: M2 CS
Join Date: Aug 2009
Location: Hollywood, FL
|
interesting how the N55 will compare to the N54
|
Appreciate
0
|
01-11-2010, 12:41 PM | #12 |
Crack Addict
![]() 100
Rep 759
Posts |
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.
__________________
2009 - Titanium Silver - Steptronic - 135i - Nasty
![]() ![]() |
Appreciate
0
|
01-11-2010, 12:53 PM | #14 |
Major
![]() ![]() 245
Rep 1,294
Posts |
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? |
Appreciate
0
|
01-11-2010, 12:53 PM | #15 |
I love the ///M3, but I want 550hp ///M5
![]() 153
Rep 3,276
Posts
Drives: BMW330iE90
Join Date: May 2006
Location: NYC
|
wow, happy to see what they are doing with the 1 series. It's awesome.. they aren't treating it like some "cheap" model
|
Appreciate
0
|
01-11-2010, 12:59 PM | #16 |
Special Agent
![]() 75
Rep 1,731
Posts |
This has been hinted at for months... it is welcomed!!
__________________
[SIGPIC][/SIGPIC]
|
Appreciate
0
|
01-11-2010, 01:09 PM | #17 | |
One Fast 1
![]() 57
Rep 747
Posts |
Quote:
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. |
|
Appreciate
0
|
01-11-2010, 01:17 PM | #18 |
Captain
![]() ![]() ![]() ![]() 19
Rep 619
Posts |
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.
__________________
2015 Valencia Msport X1 sdrive28i
2014 Mazda CX-5 AWD gt Was: 2009 Montego/terra 128i 6MT (ouch)...great car |
Appreciate
0
|
01-11-2010, 01:26 PM | #19 |
Major General
![]() ![]() 166
Rep 5,689
Posts |
I would assume that it would have more top end and more lag, at least from what I have read.
__________________
![]() |
Appreciate
0
|
01-11-2010, 01:26 PM | #20 |
Major
![]() 29
Rep 1,193
Posts |
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.
|
Appreciate
0
|
01-11-2010, 01:32 PM | #21 |
Colonel
![]() 396
Rep 2,926
Posts
Drives: Cayman GT4, 135i
Join Date: Apr 2008
Location: NJ
|
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...
__________________
Current: M2CS
Gone but not forgotten: Cayman GT4, M2C, 2011 135i, E83 X3 6MT, 2016 SO M3, 2012 335iS, 2010 135i and 2006 e90 325xi |
Appreciate
0
|
01-11-2010, 01:33 PM | #22 |
Private First Class
![]() 25
Rep 128
Posts |
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.
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|