Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)

F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
The sixth generation BMW 3 Series Sedan F30/F31/F34 and the first first generation 4 Series Coupe F32/F33/F36. Get the latest 3 and 4 series pricing from our ordering and pricing guide sticky thread.

Reply
 
Thread Tools Display Modes
  #1  
Old Yesterday, 04:21 AM
mbenson36 mbenson36 is offline
Registered User
Location: Baton Rouge, LA
 
Join Date: Mar 2015
Posts: 34
Mein Auto: 328i
Hesitation In Comfort Mode?

AC cranking in 95 degrees, needed a quick hit to change lanes and uh-oh...Hesitation before it gave me what I expected right away. Is that normal in Comfort Mode?
Reply With Quote
Advertisement
  #2  
Old Yesterday, 04:53 AM
GAS428 GAS428 is offline
Officially Welcomed to the 'Fest
Location: Santa Clarita
 
Join Date: Dec 2014
Posts: 246
Mein Auto: 428 Grand Coupe M Sport
Quote:
Originally Posted by mbenson36 View Post
AC cranking in 95 degrees, needed a quick hit to change lanes and uh-oh...Hesitation before it gave me what I expected right away. Is that normal in Comfort Mode?
Happened to me to. I am working to repeatedly produce the problem because my last service visit did not show the problem. Once I have the technique to repeat the event on command I will demonstrate it to the service manager.

This is an electric throttle system. the computer should be able to control the system through an effective throttle response off the line like my 2005 SAAB 95. IT is sad my SAAB can out perform my 428 on a throttle goose.

You should do the same. enough of us complain, maybe BMW will fix the software.
Reply With Quote
  #3  
Old Yesterday, 07:46 AM
blk88verde blk88verde is offline
Officially Welcomed to the 'Fest
Location: Northern Westchester Cty, NY
 
Join Date: Mar 2014
Posts: 185
Mein Auto: 320i 6MT M Sport
I noticed throttle LAG on the 428i GC I was driving at the UDE at Met Life Stadium in NJ on the autocross course. It was pretty warm out, but nowhere near 95 degrees. I asked the instructor if the car was in Sport Mode and her reply was yes. I have a 6MT and no LAG with my car. On any of the F30 8AT ZF cars I have driven or ridden in there is definitely a little lag, including the AH3. I would expect with the electric motors zero lag. I think it is the programming. It is annoying.
__________________
2014 Jet Black/Black 320i 6M, Msport/moon roof/htd seats
2004 Pulse Red/black leather Pontiac GTO 6M
1988 Black/Recaro Alfa Romeo Milano Verde 5M - garage queen
Reply With Quote
  #4  
Old Yesterday, 07:54 AM
LMK5 LMK5 is offline
Officially Welcomed to the 'Fest
Location: Orange County, CA
 
Join Date: Jul 2014
Posts: 470
Mein Auto: 2014 328i
I've always noticed what I would call a "hitch" when I hit the throttle to pass on the highway. I thought it was maybe a downshift, but maybe it's the lag you guys are talking about.
Reply With Quote
  #5  
Old Yesterday, 08:05 AM
voip-ninja's Avatar
voip-ninja voip-ninja is offline
Swedish Murder Machine
Location: Highlands Ranch CO
 
Join Date: Mar 2012
Posts: 2,294
Mein Auto: 328i x-drive
My 328xi has exhibited what I would describe as delayed throttle response numerous times over the three years I have owned it. It is more noticeable in comfort mode but has happened a bit in sport mode too. We'll see if my 340xi when it arrives has the same problem, but hopefully not.
__________________
Reply With Quote
  #6  
Old Yesterday, 12:06 PM
Hound Passer's Avatar
Hound Passer Hound Passer is offline
Officially Welcomed to the 'Fest
Location: NoVA
 
Join Date: Feb 2007
Posts: 1,544
Mein Auto: 435i Convertible
I think it is normal. If I want to move I put it in Sport. Don't think of it as "comfort mode," but rather Lexus IS 250 mode. It makes more sense that way b/c it really does feel more like a Lexus than a BMW in that setting. Also "Eco Pro" as "Honda Civic" mode.
__________________

Gone but not forgotten:
'96 Z3 '00 Z3 2.8 LCI '03 Z4 3.0
'07 and '11 335i 'verts
Reply With Quote
  #7  
Old Yesterday, 01:02 PM
paffinity paffinity is offline
Officially Welcomed to the 'Fest
Location: TX
 
Join Date: May 2014
Posts: 202
Mein Auto: 335i
This annoys me like crazy. I think its a combination of transmission and turbo lag. Braking into a corner and trying to accelerate out of it can be maddening at times.
Reply With Quote
  #8  
Old Yesterday, 01:05 PM
voip-ninja's Avatar
voip-ninja voip-ninja is offline
Swedish Murder Machine
Location: Highlands Ranch CO
 
Join Date: Mar 2012
Posts: 2,294
Mein Auto: 328i x-drive
Quote:
Originally Posted by paffinity View Post
This annoys me like crazy. I think its a combination of transmission and turbo lag. Braking into a corner and trying to accelerate out of it can be maddening at times.
A more serious issue that occurs with this behavior is when you are turning left at a busy intersection. The transmission and turbo lag, combined, can result in almost 1/2 a second before anything happens even if you mash the gas pedal.

I've had a few hesitations in the above scenario that I considered unacceptable on any car, let alone one with the 328xi price tag.

I'm basically rolling the dice that the combination of newer engine and other LCI refinements in 340i will make this a thing of the past.
__________________
Reply With Quote
  #9  
Old Yesterday, 01:33 PM
chiefneil's Avatar
chiefneil chiefneil is offline
Officially Welcomed to the 'Fest
Location: Phoenix
 
Join Date: May 2011
Posts: 1,356
Mein Auto: 2014 335i, 2002 330i
Quote:
Originally Posted by voip-ninja View Post
A more serious issue that occurs with this behavior is when you are turning left at a busy intersection. The transmission and turbo lag, combined, can result in almost 1/2 a second before anything happens even if you mash the gas pedal.

I've had a few hesitations in the above scenario that I considered unacceptable on any car, let alone one with the 328xi price tag.

I'm basically rolling the dice that the combination of newer engine and other LCI refinements in 340i will make this a thing of the past.
I never experience that with my 335i. If anything the throttle tip-in from a full stop is a bit twitchy. If I'm not really careful to ease into the gas, the car lurches forward.

In the circumstances you describe, you might want to switch to manual mode and start in 1st. Comfort mode usually starts in 2nd.
__________________
Current Stable: 2014 335i M-Sport // 2012 X5 35i Premium // 2002 330i Sport
Out to Pasture: 2002 X5 3.0i // 1995 325i Sport

Reply With Quote
  #10  
Old Yesterday, 01:36 PM
voip-ninja's Avatar
voip-ninja voip-ninja is offline
Swedish Murder Machine
Location: Highlands Ranch CO
 
Join Date: Mar 2012
Posts: 2,294
Mein Auto: 328i x-drive
Quote:
Originally Posted by chiefneil View Post
I never experience that with my 335i. If anything the throttle tip-in from a full stop is a bit twitchy. If I'm not really careful to ease into the gas, the car lurches forward.

In the circumstances you describe, you might want to switch to manual mode and start in 1st. Comfort mode usually starts in 2nd.
I think it's a bit easier said than done to have the foresight to start manipulating the drive mode when you are doing something as mundane as sitting at a left turn intersection to go hit the local fast food joint on your way home to the family.

One thing that I'm looking forward to with my new car (if it ever gets a production number) is that I believe you can now tweak sport mode so that transmission/steering/throttle can all be unlinked from each other.

I suspect what I will end up doing is just tuning sport mode to what I want and then just getting into the habit of driving the car in sport mode 90% of the time when I'm not doing a highway commute.
__________________
Reply With Quote
  #11  
Old Yesterday, 01:55 PM
pdxway pdxway is offline
Officially Welcomed to the 'Fest
Location: portland
 
Join Date: Jan 2014
Posts: 420
Mein Auto: 2013 328i
Yeah. Due to the slight hesitation in comfort mode, I have been driving only in sports mode for months now.
Reply With Quote
  #12  
Old Yesterday, 05:27 PM
Dennisis Dennisis is offline
Officially Welcomed to the 'Fest
Location: Tucson
 
Join Date: Oct 2013
Posts: 151
Mein Auto: 2014 335i M Sport
On my 335 I can make sport mode change just the throttle and not change the suspension. I haven't tried it but would think that would give you the response you desire and also the ride quality?
__________________


Dennis

2014 335i M Sport / Mineral Grey Metallic / Dynamic Handling Package / Premium / Tech / Driver Assistance / HK Stereo / Heated Seats
Reply With Quote
  #13  
Old Yesterday, 07:06 PM
Wine-O Wine-O is offline
Officially Welcomed to the 'Fest
Location: Myrtle Beach, SC
 
Join Date: Feb 2010
Posts: 1,107
Mein Auto: 2015 435i Coupe
Quote:
Originally Posted by pdxway View Post
Yeah. Due to the slight hesitation in comfort mode, I have been driving only in sports mode for months now.
I always switch my 435 into sport mode once I get in. Occasionally I forget, and I can feel a slight hesitation when I accelerate.

I wonder if there is a way to code it so it will always start in sport mode?
Reply With Quote
  #14  
Old Yesterday, 07:32 PM
jummo's Avatar
jummo jummo is offline
False Enthusiast
Location: Western Slope
 
Join Date: Aug 2002
Posts: 1,440
Mein Auto: 14 435xi 14 X1 35i
Comfort mode has slower throttle response than Sport. Try accelerating away from a stop in Comfort and at a steady throttle setting switch to Sport and see what happens.

I have also found with both the N54 and N55 the cars accelerate harder with a gradual roll on of the gas instead of just mashing it down.

My car has a MT and will pull quite smoothly from 1500 rpm if you ease into the gas with no lag. Stomping the pedal will induce lag anywhere below 3000rpm.

Your results will, of course, vary.

jummo
__________________
"I know you were offended, but jummo's advice was sound."
Reply With Quote
  #15  
Old Yesterday, 11:53 PM
chiefneil's Avatar
chiefneil chiefneil is offline
Officially Welcomed to the 'Fest
Location: Phoenix
 
Join Date: May 2011
Posts: 1,356
Mein Auto: 2014 335i, 2002 330i
Quote:
Originally Posted by voip-ninja View Post
I think it's a bit easier said than done to have the foresight to start manipulating the drive mode when you are doing something as mundane as sitting at a left turn intersection to go hit the local fast food joint on your way home to the family.
I just flip the transmission lever to the left to engage sport mode for those circumstances, e.g. when I just need a downshift and some rapid acceleration. It's not a big deal for me and easier than finding the sport mode button. I don't think just using the transmission sport mode gets you the more agressive throttle mapping though.
__________________
Current Stable: 2014 335i M-Sport // 2012 X5 35i Premium // 2002 330i Sport
Out to Pasture: 2002 X5 3.0i // 1995 325i Sport

Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
Today's Posts Search
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 On



Forum Jump


All times are GMT -7. The time now is 02:24 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms