Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #11  
Old 01-24-2012, 11:38 PM
Member
 
Join Date: Jan 2012
Location: Livermore, CA
Posts: 20
LeftCoastErik is on a distinguished road
Umm.in the software.

Sent from my DROID RAZR using Tapatalk
Reply With Quote

Sponsored Links

  #12  
Old 01-25-2012, 10:40 AM
Member
 
Join Date: Dec 2011
Location: North of Houston, TX
Posts: 39
bluetec is on a distinguished road
Quote:
Originally Posted by LeftCoastErik View Post
Very happy with mine so far! Just wish someone would work out the electronic throttle delay. That is incredibly annoying..
I'm very happy with mine as well, but I have not heard of (or experienced) an electronic throttle delay. Do you mean a lack of response caused by drive by wire, or are you referring to the tip-in? If you were an early adopter, there may be a newer firmware available. I'd heard they were shipping a small chip to upgrade early boxes for a nominal fee. Might want to check with BT if applicable.

Set at 100% from day one, I've had one limp mode experience at WOT during the first week. Simply restarted the engine and it was gone. Cleared codes using the BT cable, and no codes since then. Runs like a scalded a$$ ape.
Reply With Quote
  #13  
Old 01-25-2012, 11:30 AM
Member
 
Join Date: Jan 2012
Location: Livermore, CA
Posts: 20
LeftCoastErik is on a distinguished road
Its the electronic throttle. Better in DS.

Sent from my DROID RAZR using Tapatalk
Reply With Quote
  #14  
Old 01-25-2012, 12:13 PM
4MoJoe's Avatar
Member
 
Join Date: Jan 2006
Location: Portland, OR
Posts: 560
4MoJoe is on a distinguished road
Since this is plugged in under the hood, do you remove it when you take your car in for service? I would think if the BMW Service techs saw it they might not be too happy. I like the idea of this tho...
__________________
2007 328i Sport, Monaco Blue
2011 X35D - sold -Space Grey
2004 X5 4.4i - sold - Kalahari Beige
2001 X5 3.0i - sold - Pearl Beige
2006 325i Sport, Sonora Beige
2000 323i - sold - Sienna Red
Reply With Quote
  #15  
Old 01-25-2012, 01:12 PM
Member
 
Join Date: Jan 2012
Location: Livermore, CA
Posts: 20
LeftCoastErik is on a distinguished road
I would recommend removing it. Mine is tucked under the engine cover, so they should not have any reason to spot it. But why take a chance? It only takes about 5 minutes to install/uninstall it.
Reply With Quote
  #16  
Old 01-25-2012, 03:35 PM
Member
 
Join Date: Jul 2009
Location: TN
Posts: 116
diesaroo is on a distinguished road
Quote:
Originally Posted by LeftCoastErik View Post
Its the electronic throttle. Better in DS.

Sent from my DROID RAZR using Tapatalk
Gasoline engines have throttle bodies since they operate at an air:fuel ratio of about 14.7:1. If the air intake in a spark ignition engine were not controlled by a TB, pinging and pre-detonation would occur.

Diesel engines have very large air:fuel ratios as high as 200:1 so there is no need to have a butterfly to control air intake...hence no throttle body to control in a diesel.

Whatever problem you may be describing may have to do with other aspects of the M57, but I don't believe it has anything to do with the "electronic throttle."
Reply With Quote
  #17  
Old 01-25-2012, 03:51 PM
Member
 
Join Date: Jan 2012
Location: Livermore, CA
Posts: 20
LeftCoastErik is on a distinguished road
OK, let me clarify, since you are making an assumption that I don't understand modern diesels. I never stated that the M57 has a throttle body or butterfly in the system (although some diesel pickups do..)
Throttle response in this vehicle starts at the electronic pedal (Throttle Position Sensor) this signal goes to the DME, the DME then decides on the timing and duration necessary from the injectors. The DME also sends a signal to the Fuel Control Actuator on the injection pump, this ramps rail pressure. The MAP and Rail Pressure sensors provide a feedback loop and the DME does all the magic.
In the pickup diesel world, where I make my living, we call the speed and ramp rate that the DME delivers "Torque Management". By modifying signals, we can change Torque Management, thereby making the truck more responsive. This is normally a function of timing and low load fueling.
I am assuming that the BMW DME has some sort of delay built into it to, perhaps, to save transmissions from being nailed with a ton of instant torque. I have found with other gas BMWs, with drive by wire systems, that this delay exists also. In those cases the motor opening the TB takes some time, but I imagine that he processing loop may have something to do with it also.
Reply With Quote
  #18  
Old 01-25-2012, 03:57 PM
Member
 
Join Date: Jan 2012
Location: Livermore, CA
Posts: 20
LeftCoastErik is on a distinguished road
Also, FYI, modern diesels run at somewhere in the 18 (low smoke/emissions) and -40 (cruise):1 ratio for AFR.
Reply With Quote
  #19  
Old 01-26-2012, 03:04 PM
ZheHbKa's Avatar
Member
 
Join Date: Mar 2010
Location: NYC
Posts: 159
ZheHbKa is on a distinguished road
JB is a very good tune, stable and solid performance gain
__________________

2007 4.8i X5 - Monaco Blue/Beige
Sport - Tech - Cold Weather - Rear Entertainment - 3rd Row Seats - Premium Sound - Rear Climate
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 04:55 PM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.