E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Anyone drive a 335 with N55 yet?



Reply
 
Thread Tools Search this Thread
      04-23-2010, 02:06 PM   #1
tna3
Private
57
Rep
89
Posts

Drives: 335i SP MT
Join Date: Nov 2008
Location: MA

iTrader: (0)

Anyone drive a 335 with N55 yet?

Just curios how the new standard turbo engine found in the 2011's is compared to the N54. They claim peak torque at lower rpm's and improved emmission though I didn't observe much difference in published mpg's. Wonder if any noticable difference in drivability compared with the 2010 models.
Appreciate 0
      05-03-2010, 11:04 AM   #2
kioko12
king kong in the trunk...
kioko12's Avatar
United_States
44
Rep
169
Posts

Drives: 135i Cabriolet
Join Date: Apr 2010
Location: USA

iTrader: (0)

I drove a 2011 335i XDrive coupe with 3 passengers last weekend and I was pleasantly surprised at the power and handling. Granted, the car I test drove minutes earlier was a 2010 M3, the XDrive really did feel quite sporty.

You can definitely hear the turbo working harder in this car, as every time I would let off the accelerator, you could clearly hear the turbo whistle. Power was nice and linear from a dig, with virtually no turbo lag. Given that the car was at max capacity, it still got to 60 MPH very quickly. Definitely under 6 seconds. Compared to my 135i...it's tough. Not really a fair comparison due to the extra weight of the car + passengers, but it would give it a run for the money in a straight line, thanks to the XDrive and the fact that I lose rear-wheel traction in first and even second gear in the 135i.

Overall, I'm very impressed with the N55. Oh, and the A/C was running the entire time.
__________________
Appreciate 0
      05-03-2010, 12:29 PM   #3
shifterboy45
Major
shifterboy45's Avatar
23
Rep
1,179
Posts

Drives: 2009 335i Coupe
Join Date: Feb 2009
Location: North by Northwest

iTrader: (0)

hmmmm.....
could this be true?
Appreciate 0
      05-03-2010, 12:35 PM   #4
David1
Brigadier General
David1's Avatar
No_Country
795
Rep
3,945
Posts

Drives: 09 E92 09 X5
Join Date: Mar 2007
Location: Columbus, OH

iTrader: (1)

Quote:
Originally Posted by kioko12 View Post
I drove a 2011 335i XDrive coupe with 3 passengers last weekend and I was pleasantly surprised at the power and handling. Granted, the car I test drove minutes earlier was a 2010 M3, the XDrive really did feel quite sporty.

You can definitely hear the turbo working harder in this car, as every time I would let off the accelerator, you could clearly hear the turbo whistle. Power was nice and linear from a dig, with virtually no turbo lag. Given that the car was at max capacity, it still got to 60 MPH very quickly. Definitely under 6 seconds. Compared to my 135i...it's tough. Not really a fair comparison due to the extra weight of the car + passengers, but it would give it a run for the money in a straight line, thanks to the XDrive and the fact that I lose rear-wheel traction in first and even second gear in the 135i.

Overall, I'm very impressed with the N55. Oh, and the A/C was running the entire time.
Just for FYI, it doesn't matter if you have the air on. Upon accelleration the AC compressor turns off, so the AC on has no effect.
__________________
2021 M2 Comp Sunset Orange |Black with orange Stitching Dakota Leather|Executive Pkg|DCT
Appreciate 0
      05-03-2010, 12:36 PM   #5
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

6MT N54 335i vs DCT N55 335i (stock vs stock)

I bet the N55 would eat it alive.
__________________
E90 LCI N54 6AT
Appreciate 0
      05-03-2010, 12:40 PM   #6
David1
Brigadier General
David1's Avatar
No_Country
795
Rep
3,945
Posts

Drives: 09 E92 09 X5
Join Date: Mar 2007
Location: Columbus, OH

iTrader: (1)

Quote:
Originally Posted by themyst View Post
6MT N54 335i vs DCT N55 335i (stock vs stock)

I bet the N55 would eat it alive.
Not from the ones I have driven. It's afairly laggy combo to me. I will take the stick any day, regardles, it will be between the drivers.
__________________
2021 M2 Comp Sunset Orange |Black with orange Stitching Dakota Leather|Executive Pkg|DCT
Appreciate 0
      05-03-2010, 01:49 PM   #7
kioko12
king kong in the trunk...
kioko12's Avatar
United_States
44
Rep
169
Posts

Drives: 135i Cabriolet
Join Date: Apr 2010
Location: USA

iTrader: (0)

Quote:
Originally Posted by David1 View Post
Just for FYI, it doesn't matter if you have the air on. Upon accelleration the AC compressor turns off, so the AC on has no effect.
Is that the case in all BMW models or just the 2011 335i?
__________________
Appreciate 0
      05-03-2010, 02:57 PM   #8
David1
Brigadier General
David1's Avatar
No_Country
795
Rep
3,945
Posts

Drives: 09 E92 09 X5
Join Date: Mar 2007
Location: Columbus, OH

iTrader: (1)

Quote:
Originally Posted by kioko12 View Post
Is that the case in all BMW models or just the 2011 335i?
All and for that matter, most newer cars.
__________________
2021 M2 Comp Sunset Orange |Black with orange Stitching Dakota Leather|Executive Pkg|DCT
Appreciate 0
      05-03-2010, 03:23 PM   #9
Mike@N54Tuning.com
Joint Chiefs of Staff
Canada
4901
Rep
115,955
Posts

Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

iTrader: (89)

According to BMS the N55/DCT combo is pretty laggy compared to the N54/step. But they are already making pretty good progress on the tuning!

Mike
Appreciate 0
      05-03-2010, 03:42 PM   #10
kioko12
king kong in the trunk...
kioko12's Avatar
United_States
44
Rep
169
Posts

Drives: 135i Cabriolet
Join Date: Apr 2010
Location: USA

iTrader: (0)

Quote:
Originally Posted by David1 View Post
All and for that matter, most newer cars.
Even if the compressor was engaged, how much of a parasitic loss are we talking on the N54/55? 15-20 HP?
__________________
Appreciate 0
      05-03-2010, 04:12 PM   #11
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by David1 View Post
Not from the ones I have driven. It's afairly laggy combo to me. I will take the stick any day, regardles, it will be between the drivers.
So you are saying that you can match a DCT's shift speed of 8-15ms, vs the fastest human shift speed of 250-300ms? Or contend with the DCT's shorter gearing?

If you have a DCT that you're not happy with, I have a 6MT that I am not happy with and will happily trade you
__________________
E90 LCI N54 6AT
Appreciate 0
      05-03-2010, 04:43 PM   #12
cstavaru
Brigadier General
cstavaru's Avatar
308
Rep
3,262
Posts

Drives: 2009 335i M Sport Sedan 6MT
Join Date: Aug 2008
Location: Bucharest, Romania

iTrader: (0)

Quote:
Originally Posted by themyst View Post
So you are saying that you can match a DCT's shift speed of 8-15ms, vs the fastest human shift speed of 250-300ms? Or contend with the DCT's shorter gearing?

If you have a DCT that you're not happy with, I have a 6MT that I am not happy with and will happily trade you
The problem is that the N55 seems to be laggy and no gearbox can correct this. The conventional automatic may be the best suited to alleviate the lag because it can maintain the engine load between gearshifts. The DCT should be good too, but from the BMS reports, it doesn't quite help with the lag.

Also, it does matter how fast you shift, but it also matters WHEN you shift and from what gear to what gear. That's why on many tracks the manual can be just as good as the DCT (the manual is only 0.1 seconds slower than the DCT in 0-60 time). I read the DCT has some downshifting problems (it does not shift exactly when you want) and I also don't know if it is capable of double or triple downshifting.

Last edited by cstavaru; 05-03-2010 at 04:56 PM..
Appreciate 0
      05-03-2010, 05:07 PM   #13
shifterboy45
Major
shifterboy45's Avatar
23
Rep
1,179
Posts

Drives: 2009 335i Coupe
Join Date: Feb 2009
Location: North by Northwest

iTrader: (0)

can a SMGII trans 2x or 3x down?
Appreciate 0
      05-03-2010, 05:09 PM   #14
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by cstavaru View Post
The problem is that the N55 seems to be laggy and no gearbox can correct this. The conventional automatic may be the best suited to alleviate the lag because it can maintain the engine load between gearshifts. The DCT should be good too, but from the BMS reports, it doesn't quite help with the lag.

Also, it does matter how fast you shift, but it also matters WHEN you shift and from what gear to what gear. That's why on many tracks the manual can be just as good as the DCT (the manual is only 0.1 seconds slower than the DCT in 0-60 time). I read the DCT has some downshifting problems (it does not shift exactly when you want) and I also don't know if it is capable of double or triple downshifting.
Sure if you're a track guy downshifting makes a world of difference. For guys who only care about going fast in a straight line, all we care about is the inhumanly quick upshifts. Still curious about the N55 lag though. I should head down to the BMW dealer and test one out.
__________________
E90 LCI N54 6AT
Appreciate 0
      05-04-2010, 08:54 AM   #15
David1
Brigadier General
David1's Avatar
No_Country
795
Rep
3,945
Posts

Drives: 09 E92 09 X5
Join Date: Mar 2007
Location: Columbus, OH

iTrader: (1)

Quote:
Originally Posted by themyst View Post
So you are saying that you can match a DCT's shift speed of 8-15ms, vs the fastest human shift speed of 250-300ms? Or contend with the DCT's shorter gearing?

If you have a DCT that you're not happy with, I have a 6MT that I am not happy with and will happily trade you
I have the 6sp, I don't care for the DCT and the lack of control during autocross and track conditions. Now if it was the exact same unit that is in the M3, different story.
__________________
2021 M2 Comp Sunset Orange |Black with orange Stitching Dakota Leather|Executive Pkg|DCT
Appreciate 0
      05-04-2010, 09:58 AM   #16
themyst
Major General
themyst's Avatar
South Korea
177
Rep
6,631
Posts

Drives: '16 MK7 GTI
Join Date: Feb 2009
Location: NYC

iTrader: (8)

Quote:
Originally Posted by David1 View Post
I have the 6sp, I don't care for the DCT and the lack of control during autocross and track conditions. Now if it was the exact same unit that is in the M3, different story.
It IS the same unit in the E9x M3.
__________________
E90 LCI N54 6AT
Appreciate 0
      05-04-2010, 10:34 AM   #17
David1
Brigadier General
David1's Avatar
No_Country
795
Rep
3,945
Posts

Drives: 09 E92 09 X5
Join Date: Mar 2007
Location: Columbus, OH

iTrader: (1)

Quote:
Originally Posted by themyst View Post
It IS the same unit in the E9x M3.
Not the same. same case and some internals, different clutch pack and software. That's why it's not even close as to how the DCT performs in the M3.
__________________
2021 M2 Comp Sunset Orange |Black with orange Stitching Dakota Leather|Executive Pkg|DCT
Appreciate 0
      05-04-2010, 10:58 AM   #18
JB1062
Registered
2
Rep
1
Posts

Drives: 2008 E92 328i
Join Date: Jan 2010
Location: Indianapolis, IN

iTrader: (0)

No DCT (2TC) in a 335i N55

Correct me if I'm wrong. The only 3 that gets the 2TC is the 335is coupe or convertible. Currently the 205 is mated to the N55 in the 335i sedans/coupe.

The only N55/2TC is in the 135i coupe/convertible.
Appreciate 0
      05-04-2010, 11:24 AM   #19
cstavaru
Brigadier General
cstavaru's Avatar
308
Rep
3,262
Posts

Drives: 2009 335i M Sport Sedan 6MT
Join Date: Aug 2008
Location: Bucharest, Romania

iTrader: (0)

Quote:
Originally Posted by JB1062 View Post
Correct me if I'm wrong. The only 3 that gets the 2TC is the 335is coupe or convertible. Currently the 205 is mated to the N55 in the 335i sedans/coupe.

The only N55/2TC is in the 135i coupe/convertible.
Didn't knew the 335is and 335i have different DCT gearboxes. This explains some things...
Appreciate 0
      05-04-2010, 01:46 PM   #20
cstmx_ryder
Colonel
cstmx_ryder's Avatar
United_States
164
Rep
2,875
Posts

Drives: A metal box with a roundel
Join Date: Jul 2007
Location: Portland, OR

iTrader: (2)

Quote:
Originally Posted by David1 View Post
Not the same. same case and some internals, different clutch pack and software. That's why it's not even close as to how the DCT performs in the M3.
DCT>manual ANY DAY, I don't care if it's the same DCT as the E9x Ms or not......It will still be faster than my hand/foot combo........

Since you know so much about the DCT, what's the difference between the M and non M DCT?

School me
__________________

'08 AW E90 335i
PROcede V5 | BMS DCI | RR DPs | ETS FMIC | FORGE DVs | Stett CP | Vanguard | PSS10
Appreciate 0
      05-04-2010, 02:24 PM   #21
onefastman
Major General
159
Rep
5,689
Posts

Drives: 2009 135i 2011 e92m dct
Join Date: Sep 2009
Location: Earth

iTrader: (15)

+1, if you have any questions terry is the man to ask. His is already 4psi above stock
__________________
Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(1addicts.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:14 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST