BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
BPM Sport
Post Reply
 
Thread Tools Search this Thread
      02-08-2012, 04:24 PM   #1
Wendall
***Major MammelToe
 
Wendall's Avatar
 
Drives: E92 M3 SG coupe
Join Date: Feb 2012
Location: Orange County, CA

Posts: 1,100
iTrader: (3)

DCT Lag from a stop for a new owner

Okay ive been catching up with all my reading on this forum and the DCT lag caught my attention. I checked my car history report and it shows:

"12/16/2011 the Engine/powertrain computer/module checked
Wheels checked and PCV hose repaired

Vehicle Repair Center
Costa Mesa, CA "

So i assume they upgraded my DCT software and completed they fixed the lag.

However, I still get a lag coming out of neutral or after complete stop. It feels like a 2 second lag coming out of a complete stop. Its slightly bothersome. Its this normal?

I dont get lag slowing down to 5-10mph and then hitting the gas again and thats what the lag complaint was about.

I would like to hear comments if my lag from a stop is normal or if i should bring it in to the dealer. TIA!
Wendall is offline   United_States
0
Reply With Quote
      02-08-2012, 04:40 PM   #2
m0da
in the right lane
 
Drives: 2008 e93 m3
Join Date: Nov 2011
Location: Austin/Houston

Posts: 45
iTrader: (0)

I experience the lag from a stop (haven't checked neutral) as well.

It's like a small amount of time, then what feels like a kick into gear, and finally it moves.

I experience the "slowing down thing" as well, not sure all the way down to 5-10mph though. When it's in high gear and you are driving at a relatively low speed, if you decide to "apply a great amount of pressure" to the gas pedal, it will take its merry old time to downshift. I am still learning to adjust when I should/shouldn't pass a yellow light.

Shifting up, it is fine, just dandy. Shifting down is a different story for me.

I am pretty sure I have the latest DCT Software. My SA told me he loaded it up with the latest software recently, because I didn't have it initially.
m0da is offline  
0
Reply With Quote
      02-08-2012, 06:02 PM   #3
BarryC
Major
 
Drives: '13 LRP M3
Join Date: May 2007
Location: Kernersville NC

Posts: 1,135
iTrader: (10)

It just the take up of the clutch. The engagement does not occur until you press on the gas so there's a little delay. I really noticed it coming from my GTR where the clutch engagement started when you released the brake pedal. So this is a choice BMW has made with respect to the engagement of the clutch relying on the accelerator.

BC
__________________
2013 Lime Rock M3 6speed, ESS VT1-550, ESS HFCs, KW Clubsports, Fire Orange PFC Z31 BBK, Apex EC7 w/Mich PSS 265/285, ModeCarbon GT4 Lip, UUC SSK, Performance Seats and CF Trim, GT Motoring Alcantara orange stich shift & ebrake boots, iND floor mats
BarryC is offline   United_States
0
Reply With Quote
      02-08-2012, 11:44 PM   #4
aznkuja328
Private
 
Drives: 10 JB E92 M3
Join Date: May 2010
Location: Bloomington, IN

Posts: 98
iTrader: (1)

i believe true dct are always like that...
aznkuja328 is offline   United_States
0
Reply With Quote
      02-09-2012, 08:10 AM   #5
Wendall
***Major MammelToe
 
Wendall's Avatar
 
Drives: E92 M3 SG coupe
Join Date: Feb 2012
Location: Orange County, CA

Posts: 1,100
iTrader: (3)

Cool thanks for the input.
Wendall is offline   United_States
0
Reply With Quote
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 07:24 AM.




m3post
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