BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW M2 Forum > BMW M2 Competition Model > M2 your Daily Driver? Reset throttle adaptions!

Post Reply
 
Thread Tools Search this Thread
      11-17-2019, 10:20 PM   #23
cptobvious
Captain
cptobvious's Avatar
United_States
1828
Rep
688
Posts

Drives: M2C HS DCT
Join Date: Jul 2018
Location: San Diego, CA

iTrader: (0)

Quote:
Originally Posted by Dav3 View Post
If your M2 progressively feels more sluggish over time and you DD your car or have spent most of the cars life in traffic, you probably need to reset your throttle adaptions.

Modern BMW's basically use a form adaptive tech that adjusts throttle response to typical/consistent driving scenarios. I'm guessing it's been implemented a bit for comfort and a bit for consumption/emissions.

The main issue with this technology is that the car has no idea on how hard the owner wants to drive on any given day and requires a consistent driving style to update to a new profile.

My typical workday route involves 70% severely congested and claustrophobic traffic. The remaining 30% is instead free open highway. Even in my scenario, where the two driving scenarios are somewhat balanced out, I've noticed that over time the car just doesn't pull that hard anymore.

The fix? Reset throttle adaptions! It takes 5 minutes with no effort at all.

Taken from another thread, the instructions are as follows:

Push Engine button ON (once; do not start engine)
Step on the throttle pedal down (all the way down)
Hold it there for 30-40 seconds
With throttle still down, push Engine button OFF
Release throttle
Wait 2 minutes
Start car normally. Done


I've done the throttle reset for each mode (felt necessary to repeat the above process for Sport+) and the car feels completely healed. Now I can easily do aggressive pulls with responsive feedback without feeling like there's any turbo lag. Just try it out!
OP!!! You da man!!!

I just did this and the car feels completely different. It's exactly as you said - it feels like the turbo lag is gone.

I'm convinced that this is 100% psychosomatic, but I'll take the placebo effect all day every day! It's awesome. Thank you!!!
Appreciate 0
      11-17-2019, 11:12 PM   #24
Dav3
Captain
Dav3's Avatar
542
Rep
781
Posts

Drives: M2C DCT / Z4 M MT
Join Date: Oct 2016
Location: Europe

iTrader: (0)

Quote:
Originally Posted by cptobvious View Post
OP!!! You da man!!!

I just did this and the car feels completely different. It's exactly as you said - it feels like the turbo lag is gone.

I'm convinced that this is 100% psychosomatic, but I'll take the placebo effect all day every day! It's awesome. Thank you!!!
Glad it made a difference to you!

It really shouldn't be placebo effect though, the 'throttle adaption reset' option as far as I remember is an option on the oem Istep software and BM3 software.
Definitely does something.
Appreciate 0
      11-18-2019, 12:07 AM   #25
Harlequin_Forest
Registered
0
Rep
3
Posts

Drives: Taco
Join Date: Oct 2019
Location: Oregon

iTrader: (0)

I presume this isn't an issue with 6MT?
Appreciate 0
      11-18-2019, 02:19 AM   #26
Davil
Captain
Australia
1370
Rep
809
Posts

Drives: Various
Join Date: Jul 2018
Location: Australia

iTrader: (0)

Quote:
Originally Posted by Harlequin_Forest View Post
I presume this isn't an issue with 6MT?
Does your 6MT have a throttle?
Appreciate 0
      11-18-2019, 06:35 AM   #27
BlkSVT
Second Lieutenant
341
Rep
276
Posts

Drives: 2019 M2c BSM/Black/6MT
Join Date: Aug 2018
Location: NW Burbs of Chicago

iTrader: (0)

Quote:
Originally Posted by Harlequin_Forest View Post
I presume this isn't an issue with 6MT?
Pretty much every car manufactured over at least the last 10 years has this adaptive/learning strategy. There are several things in play, but the ECU is always adjusting parameters based on the driving situation and environment it sees to optimize drivability, emissions, fuel economy, power, etc, all while compensating for wear and aging. It really isnít a bad thing, and itís also necessary to maintain compliance over the life of the car.

A side effect is, that thereís only so much driving history going into the adaptation so if you only do light throttle, granny-shifted, A/C-on driving in 100F and then hammer on it on a cool morning, the first time or 2 it has to re-optimize and undo the damage you did by driving like grandma !

I have quite a bit of experience tuning Audiís 3.0T platform, and yes, there are people who will say things like ďI have a Stage 2 tune, and in sport mode, the power is great, but driving in traffic can be a bit nervous and twitchy. Iím going to remove the tune ď Most enthusiast board responses to that were WTF dude?! Take it outta sport, why did you tune, etc. Different strokes...and there has to be a mechanism to deal with it
Appreciate 0
      11-18-2019, 11:46 AM   #28
Thescout13
Brigadier General
Thescout13's Avatar
United_States
2612
Rep
3,834
Posts

Drives: '18 F80 M3, '20 F87 M2C
Join Date: Nov 2013
Location: California

iTrader: (0)

Quote:
Originally Posted by Davil View Post
Quote:
Originally Posted by Harlequin_Forest View Post
I presume this isn't an issue with 6MT?
Does your 6MT have a throttle?
Well, to be fair, the issues is both a throttle and TCU learning for the DCT. In auto/DCT BMWs there is throttle learning but there is also transmission learning (i.e., the transmission computer learns how you drive and makes shifting point decisions based on that, thus potentially keeping you in a lower gear). With a manual, you don't have TCU learnings that artificially hold a lower gear, because, well, you are the one controlling the gear. Thus, for 6MT owners this issue is likely less pronounced. Though I would say after weeks of DD in heavy traffic, even in a MT, throttle learning could start to be noticeable on spirited drives.

That being said, as a disclaimer, I cannot recall with certainty if the above method is also the method for resetting the TCU as well (I seem to recall that it is, but am not 100% positive).
__________________
Wife's Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017)
Upcoming ED: 2020 F87 M2C, LBB, ZEC, 6MT
Appreciate 0
      11-18-2019, 11:50 AM   #29
Bumpinjeep
Second Lieutenant
Bumpinjeep's Avatar
United_States
164
Rep
286
Posts

Drives: 2020 M2C
Join Date: Mar 2017
Location: Bellevue, WA

iTrader: (0)

Garage List
2020 BMW M2C  [0.00]
Just a FYI, i did this on Saturday. Drove my car this morning for the first time since then and noticed that my throttle is a lot more linear. I also completely forgot that i did the reset on Saturday, so it wasn't like i expected anything different (placebo effect). The power comes on quicker and more progressively. The M2C is my DD so i generally don't misbehave on the road and since it's fall in the Pacific North West, the roads aren't exactly conducive to spirited driving anyway. But when the weather did let up a little, man, this thing flies.
__________________
2020 M2C HS
Executive, 6 Speed
Appreciate 1
Moflow274.00

      11-18-2019, 02:43 PM   #30
Dav3
Captain
Dav3's Avatar
542
Rep
781
Posts

Drives: M2C DCT / Z4 M MT
Join Date: Oct 2016
Location: Europe

iTrader: (0)

Quote:
Originally Posted by Thescout13 View Post
Quote:
Originally Posted by Davil View Post
Quote:
Originally Posted by Harlequin_Forest View Post
I presume this isn't an issue with 6MT?
Does your 6MT have a throttle?
Well, to be fair, the issues is both a throttle and TCU learning for the DCT. In auto/DCT BMWs there is throttle learning but there is also transmission learning (i.e., the transmission computer learns how you drive and makes shifting point decisions based on that, thus potentially keeping you in a lower gear). With a manual, you don't have TCU learnings that artificially hold a lower gear, because, well, you are the one controlling the gear. Thus, for 6MT owners this issue is likely less pronounced. Though I would say after weeks of DD in heavy traffic, even in a MT, throttle learning could start to be noticeable on spirited drives.

That being said, as a disclaimer, I cannot recall with certainty if the above method is also the method for resetting the TCU as well (I seem to recall that it is, but am not 100% positive).
Should be for TCU too from what I remember
Appreciate 0
      11-18-2019, 06:04 PM   #31
mothertongue
New Member
2
Rep
12
Posts

Drives: m2 competition
Join Date: Oct 2018
Location: NYC

iTrader: (0)

Thanks for the fix! I've noticed too in drive mode and have a similar driving style (daily through city and my weekends in the country). Sports plus and sequential mode gets it moving though, every time
Appreciate 0
      11-18-2019, 06:08 PM   #32
bri1042
Major
bri1042's Avatar
1092
Rep
1,496
Posts

Drives: 2019 LBB M2C
Join Date: Mar 2013
Location: Portland, OR

iTrader: (0)

I did this a few times on my 328 and my 340, but haven't yet on the M2C. It seemed to make some difference if it had been a long time and road conditions had changed my driving behavior (like going from winter driving habits to "ooooo! SUN!" habits). I've generally done a reset when I change back to my summer tires, but I don't think I did it last Spring.
Appreciate 0
      11-18-2019, 09:35 PM   #33
Poochie
Luxury at the redline :)
Poochie's Avatar
United_States
3102
Rep
3,588
Posts

Drives: 2016 M2
Join Date: Aug 2012
Location: NYC

iTrader: (1)

Resetting the adaptions does help improve a modern vehicle's response and throttle, especially those with a DCT, as some have pointed out.

At WOT, under aggressive driving or "manual mode" for DCTs, adaptations won't matter. Adaptations are more so to make leisure and everyday driving more tolerable since the car essentially learns you and your behavior. Newer vehicles even saves your driving patterns keyed to the navigation routes.

You can reset the adaptions with just a $10 dongle and a free APP but I use ISTA+, which gives you the option to reset specific modules, not just the entire vehicle but either method achieve the same result.
Attached Images
 
Appreciate 1
m20e3087278.00

      11-27-2019, 09:27 AM   #34
Malakas
Second Lieutenant
United_States
74
Rep
297
Posts

Drives: 2020 M2c
Join Date: Jun 2011
Location: Houston, TX

iTrader: (0)

Just a point of reference... It seems the throttle adaptations are different depending on mode. I've been driving more in Sport when I'm in traffic and now, two weeks later, the lagging throttle has returned. I'm only using sport+ when I can hammer on the car, and it's still snappy. Just something to think about ... Probably will need to do the reset at least once a month.

A buddy is a master tech and he didn't think there was any issue doing the reset over and over. Fuel econ may suffer, but... So what
Appreciate 1
Dav3541.50

      11-27-2019, 11:25 AM   #35
Dav3
Captain
Dav3's Avatar
542
Rep
781
Posts

Drives: M2C DCT / Z4 M MT
Join Date: Oct 2016
Location: Europe

iTrader: (0)

Quote:
Originally Posted by Malakas View Post
Just a point of reference... It seems the throttle adaptations are different depending on mode. I've been driving more in Sport when I'm in traffic and now, two weeks later, the lagging throttle has returned. I'm only using sport+ when I can hammer on the car, and it's still snappy. Just something to think about ... Probably will need to do the reset at least once a month.

A buddy is a master tech and he didn't think there was any issue doing the reset over and over. Fuel econ may suffer, but... So what
I think throttle adaption is mode dependent

Had to do the reset procedure for Stock/M1/M2 mode for all of them to feel fresh

Those who don't complain probably only enable the "Sport Setup M1/M2" configuration on empty roads and revert to stock basic for daily driving.

Start & Stop Traffic, long queues and just city driving are what fucks it up.
Appreciate 0
      11-27-2019, 12:39 PM   #36
spetsnazos
Captain
772
Rep
920
Posts

Drives: M2C
Join Date: Apr 2018
Location: SoCal

iTrader: (0)

Dang this worked! I always drive in sport + and it made a huge difference after doing this
Appreciate 0
      11-27-2019, 08:50 PM   #37
Malakas
Second Lieutenant
United_States
74
Rep
297
Posts

Drives: 2020 M2c
Join Date: Jun 2011
Location: Houston, TX

iTrader: (0)

Quote:
Originally Posted by spetsnazos View Post
Dang this worked! I always drive in sport + and it made a huge difference after doing this
For me it was dramatic as well
Appreciate 0
      11-28-2019, 09:28 AM   #38
nomoracin
Captain
United_States
605
Rep
849
Posts

Drives: M2C
Join Date: Jun 2018
Location: Virginia

iTrader: (0)

Garage List
Would going from Stage 1 version 8.7 to stock to Stage 1 version 9.1 also reset the throttle? ...because ver 9.1 feels faster to me.

(This is NOT my DD, so it could just be in my head...unless ver 9.1 itself is a faster tune)
Appreciate 0
      11-29-2019, 03:24 AM   #39
bioman
Private First Class
34
Rep
145
Posts

Drives: E30
Join Date: Apr 2009
Location: Socal

iTrader: (0)

Quote:
Originally Posted by spetsnazos View Post
Dang this worked! I always drive in sport + and it made a huge difference after doing this
From the convo above, it shouldn't make any difference in Sport+. But you noticed something?
Appreciate 0
      11-30-2019, 09:29 PM   #40
csbear
Captain
csbear's Avatar
953
Rep
959
Posts

Drives: SO M2C
Join Date: Mar 2015
Location: Las Vegas, NV

iTrader: (0)

Did this last night, forgot about it, and after driving this morning, I was surprised with some extra "oomph" down low.. as well as some more linearity and a loss of some lag.

I daily drive to work, and not a far distance, but always have Sport+ on.

Whether this is psychological or legit (I believe you all ), something changed!
Appreciate 1
cptobvious1827.50

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 10:24 PM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, 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