Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X3 (E83) Forum
Arnott
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
  #1  
Old 03-09-2012, 01:12 PM
jhb jhb is offline
Member
 
Join Date: Jul 2008
Location: boston
Posts: 58
jhb is on a distinguished road
Dinan and transmission shift points

My X3 has always had issue with shifting the auto transmission. For example, when simply driving down the road and with no appreciable throttle input the tranny will suddenly shift down and the engine will rev to maintain speed. It's just not "right".

I spoke to the dealer about it, and they put it off as "works as designed". One tech even said it's because the car tends to be underpowered. They did disconnect the battery to clear the transmission program so it could "re-learn" my driving style, but the "feature" remains, and I had decided to live with it.

I was thinking about it the other day and suddenly wondered if the Dinan programming might correct it. The 3.0 engine could use a little more "oomph" in any case, and the Performance Program at 299 seems reasonable, especially if I get a bit more performance from the car and get rid of the shift issue.

Anyone have any thoughts? The only other question becomes, will the software work for a 2008? They only list through 2006.

If they have a try it before you buy it policy, it might be worth looking into. The car goes in Tuesday and it might be good opportunity to load it up.
Reply With Quote

Sponsored Links

  #2  
Old 03-10-2012, 03:18 AM
JCL's Avatar
JCL JCL is offline
Premier Member
 
Join Date: Mar 2005
Location: Vancouver, Canada
Posts: 11,853
JCL will become famous soon enoughJCL will become famous soon enough
Up through 2006, the X3 used the 225 hp M54 engine. Your 2008 has the 260 hp N52 engine. Software designed for one won't work on the other. You may find software for the newer engine, but I doubt it.

The software raises the rev limit by 240 rpm, so if your shifting issues happen at redline there may have been a difference. That's a joke. I wouldn't expect any difference. The sofware claims to add 4 hp at 5700 rpm, but doesn't say how much it loses at lower rpm. In any case, 4 hp is not significant.
__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver

2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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 05:20 PM.
vBulletin, Copyright 2023, 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.