THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning Odd M240i driveline issue

Post Reply
 
Thread Tools Search this Thread
      05-11-2022, 07:04 PM   #1
MarcoZandrini
Major
United_States
444
Rep
1,262
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

Odd M240i driveline issue

I noticed an odd issue when my M240i is in sport or sport+ mode. When I accelerate briskly I notice something I can only describe as something in the driveline trying to “catch up” with the rest of the car. That is, as I accelerate the car briskly there’s a slight delay (0.5+ second) before the car “really” accelerates. I can feel a slight “bump” when this occurs. This doesn’t occur in “comfort” mode. Don’t even ask about “Eco Pro,” whatever that is. There are no other abnormalities. The car is out of warranty.

I scanned the car with bimmerlink and nothing relevant came up.
Appreciate 0
      05-12-2022, 11:51 AM   #2
freakystyly
Lieutenant Colonel
2931
Rep
1,789
Posts

Drives: F22 B58 6MT
Join Date: May 2016
Location: Ontario

iTrader: (0)

Quote:
Originally Posted by MarcoZandrini View Post
I noticed an odd issue when my M240i is in sport or sport+ mode. When I accelerate briskly I notice something I can only describe as something in the driveline trying to “catch up” with the rest of the car. That is, as I accelerate the car briskly there’s a slight delay (0.5+ second) before the car “really” accelerates. I can feel a slight “bump” when this occurs. This doesn’t occur in “comfort” mode. Don’t even ask about “Eco Pro,” whatever that is. There are no other abnormalities. The car is out of warranty.

I scanned the car with bimmerlink and nothing relevant came up.
Is it just regular turbo business or more dead throttle related?

Punching the throttle in DCT off or sport+ seems to rev the engine and there is a slight delay before the fun times happen on mine too. I think it's just air being compressed.

This is honestly my first turbo engine (and it's a nice one) and I've come to accept there's weird behaviour going on vs natural aspirated.

Last edited by freakystyly; 05-12-2022 at 12:21 PM..
Appreciate 0
      05-13-2022, 08:00 AM   #3
MarcoZandrini
Major
United_States
444
Rep
1,262
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

Hmmm, your response has me thinking. Maybe what I'm experiencing is turbo lag, though it's a new experience. I'm making an appointment with my local, trusted indie shop to update the software.
Appreciate 0
      05-13-2022, 09:44 AM   #4
aerobod
Car Geek
aerobod's Avatar
3612
Rep
3,578
Posts

Drives: Caterham R500, M2-G87, Macan S
Join Date: Mar 2008
Location: Calgary

iTrader: (0)

If you are below 3,000RPM or so when going full throttle, then there will be some degree of turbo lag. Keeping it above 3,000RPM where the turbo is already spooled-up gives no noticeable lag.
Appreciate 0
      05-13-2022, 10:42 AM   #5
MarcoZandrini
Major
United_States
444
Rep
1,262
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

But there wasn't any turbo lag before. I'll take him ("Gerhardt") to my local BMW indie shop. Odd, nothing relevant when I scanned the computers for codes.
Appreciate 0
      05-18-2022, 04:10 PM   #6
Ajowhan
Lieutenant
253
Rep
514
Posts

Drives: m240i 'vert
Join Date: Feb 2021
Location: CA

iTrader: (1)

That is really odd, I have only experienced most of turbo lag in comfort, sports and sports+ are usually pretty good at keeping rev high and turbo spooling. Especially if you experienced it in sports but not comfort.

Any tune on the car?
Appreciate 0
      05-19-2022, 08:50 AM   #7
MarcoZandrini
Major
United_States
444
Rep
1,262
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by Ajowhan View Post
That is really odd, I have only experienced most of turbo lag in comfort, sports and sports+ are usually pretty good at keeping rev high and turbo spooling. Especially if you experienced it in sports but not comfort.

Any tune on the car?
Nope! Driveline is bone stock.
Appreciate 0
      05-19-2022, 10:59 AM   #8
Ajowhan
Lieutenant
253
Rep
514
Posts

Drives: m240i 'vert
Join Date: Feb 2021
Location: CA

iTrader: (1)

Quote:
Originally Posted by MarcoZandrini View Post
Nope! Driveline is bone stock.
In that case, Im gonna say, it might just be a coincidences, depending on where your car are in RPM.

In the past, I have noticed before occasion where the car are almost instantaneously responsive on throttle and some other time where it kind of lag, Im thinking this depends on the gear and rpm. Turbo car thingy lol
Appreciate 0
      05-28-2022, 12:31 PM   #9
MarcoZandrini
Major
United_States
444
Rep
1,262
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

Took him to my local trustee bimmer shop. The tech tried to update all the software but had a problem with a couple of items. Lag is reduced but still there. Next stop is the dealer.
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



All times are GMT -5. The time now is 12:05 AM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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