BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      08-01-2007, 05:04 PM   #1
Harold
Lieutenant
United_States
108
Rep
504
Posts

 
Drives: Z3 Coupe
Join Date: Jan 2007
Location: BMW HQ

iTrader: (0)

Exclamation 2007 Engine Tech: How the N54 turbo engine works (must read!!!)

PDF Files:

2007 Engine Introduction (right-click-save-as)
2007 Engine Management (right-click-save-as)
2007 Engine Mechanical (right-click-save-as)
2007 Engine Technology (right-click-save-as)



ENGINE INTRODUCTION








ENGINE MANAGEMENT


Attached Images
Appreciate 0
      08-02-2007, 08:50 AM   #2
Madjack
Private
0
Rep
59
Posts

 
Drives:
Join Date: Jul 2007

iTrader: (0)

That should clear up some questions about the blow-off valves.
Appreciate 0
      08-15-2007, 05:08 PM   #3
240M3SRT
***** badass
240M3SRT's Avatar
1
Rep
21
Posts

 
Drives:
Join Date: Aug 2007

iTrader: (0)

Quote:
Originally Posted by Madjack View Post
That should clear up some questions about the blow-off valves.
"a clearly noticeable, disruptive pumping noise can be heard"...haha, yea its called blow-off.

Im not sure that section really determines whether or not they can be externally vented. One issue i can see would be the idle suffering like it does on MAF cars. And its probably monitored by the ecu too well to "trick" without adverse affects.

The air is read by an HFM, but im unfamilair with those.
Appreciate 0
      08-16-2007, 02:34 PM   #4
Sperm
New Member
0
Rep
29
Posts

 
Drives: 2002 Impreza WRX
Join Date: Aug 2007
Location: NJ

iTrader: (0)

Very informative thread. Thanks.
Appreciate 0
      10-31-2007, 05:59 PM   #5
DonArm
Registered
0
Rep
2
Posts

 
Drives:
Join Date: Oct 2007

iTrader: (0)

Good info to start with ; )
Appreciate 0
      11-03-2007, 01:35 PM   #6
Ryephile
Not a Newbie
1
Rep
173
Posts

 
Drives:
Join Date: Nov 2007

iTrader: (0)

Send a message via AIM to Ryephile Send a message via Yahoo to Ryephile
Of interesting note is how the wastegate system is different than popular aftermarket turbo wastegates. The BMW setup is a "pull closed" wastegate, where it defaults to being open. This is opposite to aftermarket setups where the wastegate is held closed until the pressure transducer is presented with pressure to open it. The BMW system provides safe failure mode operation and improved control resolution over traditional setups.
__________________
[SIGPIC][/SIGPIC]
Appreciate 0
      11-19-2007, 04:51 AM   #7
Drex
New Member
0
Rep
29
Posts

 
Drives:
Join Date: Nov 2007

iTrader: (0)

"Do not make any alterations to the turbocharger. Never attempt to alter the boost-pressure control linkage. The turbocharger has been optimally configured at the factory. If the turbocharger operates at higher boost pressures that permitted by he engine manufacturer, the engine may run hot and pistons, cylinder heads or engine bearings may fail, or the safety function of the engine electronics may respond an activate the engine's limp-home program."

This last section particularly interested me. Coming from a subie where pretty much everything is mechanical...to this where everything is controlled by computers, i get a little worried about going crazy with mods.

my intentions were to go with IC/chip/exhaust. But i see some companies increase boost up to 14psi while others only bump it up a little. When i got a boost controller on my wrx, I only bumped it up a lb and i felt a noticeable difference, and that was only a BC and not a chip.

So i worry that the chips that bump it up too much may run inline with that statement that said the engine could run too hot. While this may not pose any problems in the first year...what about when the 4yr/50k (some people can put 50k on in a year btw) mile warranty runs up and you have blown engine... I wouldn't even want to think about how much that would cost
__________________
-135i Coupe
--AW, sport, usb/ipod, hi-fi stereo
-Production # 6711168
-Delivery Date 9/15/2008

*just in time for oktoberfest in Germany!!!
Appreciate 0
      11-27-2007, 05:54 PM   #8
S62PWR
BMW CCA# 90345
United_States
2
Rep
42
Posts

 
Drives: 08 335i Cpe 6 speed
Join Date: Dec 2007
Location: Indio and San Francisco, CA

iTrader: (0)

Harold, great stuff. Can you repost the Mechanical and Technology PDF's. They seem to be MIA. Thanks
Appreciate 0
      11-28-2007, 12:58 AM   #9
slipkmaggot
First Lieutenant
3
Rep
361
Posts

 
Drives:
Join Date: Nov 2007

iTrader: (0)

Send a message via AIM to slipkmaggot
....great read

.....if only i knew what it meant

:respekt:
Appreciate 0
      12-03-2007, 01:15 PM   #10
john970
1er
19
Rep
1,203
Posts

 
Drives: 08 135
Join Date: Feb 2008
Location: Denver

iTrader: (0)

PDF links broken.
Appreciate 0
      01-05-2008, 07:31 PM   #11
Oregon
NRA Life Member, BMW CCA 25-year member
Oregon's Avatar
United_States
35
Rep
2,592
Posts

 
Drives: 08' 135i & 04' M3
Join Date: Aug 2007
Location: Oregon

iTrader: (1)

Quote:
Originally Posted by john970 View Post
PDF links broken.
Concur...
__________________
Resigned 1ADDICTS Moderator


“To disarm the people is the best and most effective way to enslave them.” – George Mason
Appreciate 0
      01-06-2008, 02:24 AM   #12
Harold
Lieutenant
United_States
108
Rep
504
Posts

 
Drives: Z3 Coupe
Join Date: Jan 2007
Location: BMW HQ

iTrader: (0)

Quote:
Originally Posted by john970 View Post
PDF links broken.
Fixed. Thanks.
Appreciate 0
      01-06-2008, 11:07 AM   #13
Oregon
NRA Life Member, BMW CCA 25-year member
Oregon's Avatar
United_States
35
Rep
2,592
Posts

 
Drives: 08' 135i & 04' M3
Join Date: Aug 2007
Location: Oregon

iTrader: (1)

Thank YOU !
__________________
Resigned 1ADDICTS Moderator


“To disarm the people is the best and most effective way to enslave them.” – George Mason
Appreciate 0
      04-16-2008, 01:32 AM   #14
absoluzer0
New Member
0
Rep
11
Posts

 
Drives:
Join Date: Apr 2008

iTrader: (0)

Quote:
Originally Posted by 240M3SRT View Post
"a clearly noticeable, disruptive pumping noise can be heard"...haha, yea its called blow-off.

Im not sure that section really determines whether or not they can be externally vented. One issue i can see would be the idle suffering like it does on MAF cars. And its probably monitored by the ecu too well to "trick" without adverse affects.

The air is read by an HFM, but im unfamilair with those.

Actually the blow off valve doesnt make a "disruptive pumping noise" Thats called compressor surge,. Have you ever heard what compressor surge sounds like? It sounds exactly like a "noticeable, disruptive pumping noise." A blow off valve makes a single noise of pressure relief.
Appreciate 0
      04-27-2008, 02:05 AM   #15
wild2taz
New Member
0
Rep
23
Posts

 
Drives:
Join Date: Apr 2008

iTrader: (0)

great read.. thanks for posting..
Appreciate 0
      05-14-2008, 07:29 PM   #16
adnb
New Member
adnb's Avatar
0
Rep
21
Posts

 
Drives: BMW 123d
Join Date: Feb 2008
Location: Portugal

iTrader: (0)

Hello,

I've registered just to thank you on the intel...
Excellent post!

Do you have anything like that for the 2.0 bi-turbo diesel engine?

Thanks in advance!
Appreciate 0
      03-03-2009, 11:19 PM   #17
drumnatural
New Member
0
Rep
18
Posts

 
Drives: 135i future owner
Join Date: Mar 2009
Location: Maryland

iTrader: (0)

Dear lord thats alot of info
Appreciate 0
      04-17-2009, 09:06 PM   #18
jeremydgreat
Captain
jeremydgreat's Avatar
United_States
18
Rep
676
Posts

 
Drives: 2009 JB3
Join Date: Apr 2008
Location: San Diego, CA (Carlsbad to be exact)

iTrader: (1)

Quote:
Originally Posted by Drex View Post
"Do not make any alterations to the turbocharger. Never attempt to alter the boost-pressure control linkage. The turbocharger has been optimally configured at the factory. If the turbocharger operates at higher boost pressures that permitted by he engine manufacturer, the engine may run hot and pistons, cylinder heads or engine bearings may fail, or the safety function of the engine electronics may respond an activate the engine's limp-home program."

This last section particularly interested me. Coming from a subie where pretty much everything is mechanical...to this where everything is controlled by computers, i get a little worried about going crazy with mods.

my intentions were to go with IC/chip/exhaust. But i see some companies increase boost up to 14psi while others only bump it up a little. When i got a boost controller on my wrx, I only bumped it up a lb and i felt a noticeable difference, and that was only a BC and not a chip.

So i worry that the chips that bump it up too much may run inline with that statement that said the engine could run too hot. While this may not pose any problems in the first year...what about when the 4yr/50k (some people can put 50k on in a year btw) mile warranty runs up and you have blown engine... I wouldn't even want to think about how much that would cost
Kinda surprised no one has responded to this.
__________________
135i // M-Sports Package // RR Oil Catch Can // Black Kidneys // iCarbon Hood // Alum Pedals // KW v2 Coilovers // Vorshlag Camber Plates // JB3 // Hotchkis Sway Bar // Wheel Studs. Best mod ever? Tires. 255's in front, 275's in back.
Appreciate 0
      05-01-2009, 04:59 PM   #19
TMR013
Opus Angelus
TMR013's Avatar
United_States
24
Rep
1,012
Posts

 
Drives: '09 Monaco Blue 135i coupe
Join Date: Apr 2009
Location: Chandler, AZ

iTrader: (0)

Anybody know the OEM that makes the turbos for the N54?
Appreciate 0
      05-01-2009, 05:14 PM   #20
jeremyc74
Banned
United_States
66
Rep
5,972
Posts

 
Drives: '08 135i Montego/Terra
Join Date: Feb 2008
Location: Evansville, IN

iTrader: (0)

Quote:
Originally Posted by TMR013 View Post
Anybody know the OEM that makes the turbos for the N54?


Mitsubishi.
Appreciate 0
      02-02-2010, 02:19 PM   #21
DarthColin
Second Lieutenant
DarthColin's Avatar
Canada
6
Rep
229
Posts

 
Drives: 2011 1 Series M Coupe
Join Date: May 2009
Location: Grenfell, SK

iTrader: (0)

Does anyone know where to find the equivalent articles for the N55? That would be awesome. By the way, the documents were very informative.
Colin
Appreciate 0
      03-24-2010, 05:13 PM   #22
sdpauly
Second Lieutenant
sdpauly's Avatar
6
Rep
200
Posts

 
Drives: 2010 135i, 2008 Taco
Join Date: Mar 2010
Location: San Diego

iTrader: (0)

Quote:
Originally Posted by Drex View Post
"Do not make any alterations to the turbocharger. Never attempt to alter the boost-pressure control linkage. The turbocharger has been optimally configured at the factory. If the turbocharger operates at higher boost pressures that permitted by he engine manufacturer, the engine may run hot and pistons, cylinder heads or engine bearings may fail, or the safety function of the engine electronics may respond an activate the engine's limp-home program."

This last section particularly interested me. Coming from a subie where pretty much everything is mechanical...to this where everything is controlled by computers, i get a little worried about going crazy with mods.

my intentions were to go with IC/chip/exhaust. But i see some companies increase boost up to 14psi while others only bump it up a little. When i got a boost controller on my wrx, I only bumped it up a lb and i felt a noticeable difference, and that was only a BC and not a chip.

So i worry that the chips that bump it up too much may run inline with that statement that said the engine could run too hot. While this may not pose any problems in the first year...what about when the 4yr/50k (some people can put 50k on in a year btw) mile warranty runs up and you have blown engine... I wouldn't even want to think about how much that would cost
I too am curious about this. If I do a JB+ or a JB3 what will that do to the longevity of my engine? I am honestly pretty happy with the stock power of this car. I may not change anything at all...
Appreciate 0
Post 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
Forum Jump


All times are GMT -5. The time now is 12:08 AM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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