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      01-04-2020, 01:48 PM   #67
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Quote:
Originally Posted by Robin_NL View Post
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Originally Posted by Dav3 View Post
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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.
So you put the engine off in M1 / M2/ Sport /sport + mode and follow the same procedure ?

Will try this tomorrow

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Robin
Yeah, reset for each mode

At least it worked for me that way

I dunno, seems like some people have luck with and others not, it definitely wasn't placebo for me
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      01-04-2020, 03:46 PM   #68
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BootMod3 has an option to reset all adaptations. It is recommended to reset adaptations when changing tunes.
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      04-01-2020, 04:28 PM   #69
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Another satisfied customer here. I remember posting about this back when I had my 228i.

I was pretty much flamed and told that I was taking crazy pills.

The difference after doing this in my 20 M2C is night and day.

For me, I noticed it in all modes and did not have to do a separate reset for comfort, sport, and sport plus.

Also, esrlier in the thread, it was indicated that sport plus always has maximum throttle response, but for me, that has not been the case and I was not getting blasted in the back of my seat anymore; it was back after this reset.

But maybe I'm still taking crazy pills ¯\_(ツ)_/¯
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      04-01-2020, 04:38 PM   #70
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Shouldn't this also work with an OG M2??
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      04-01-2020, 05:31 PM   #71
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Originally Posted by BruceM View Post
Shouldn't this also work with an OG M2??
Bruce, my experience has been that this worked on my 228, my M235, and my M2C. So I imagine it works on your OG as well.
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      04-01-2020, 05:31 PM   #72
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Quote:
Originally Posted by BruceM View Post
Shouldn't this also work with an OG M2??
Works with all BMW's afaik

Procedure might be different, car year and software depending
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      04-02-2020, 07:15 PM   #73
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Well, as an OG (with a Dinan kit) owner, I did this just now. What it did was interesting to me. The throttle response on Comfort sharpened considerably, no doubt about it. But what that did functionally is mostly reduce the difference between Comfort and Sport. I also reset in Sport, but if there's a difference between pre and post-adjustment Sport it's not much. I didn't do anything to Sport+ because I don't like the Sport+ throttle in any event.
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      04-03-2020, 01:35 PM   #74
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I'd be interested to hear if it's the same after the ignition is cycled. As far as I m aware this basically tells the dme you're going to drive like a crazy thing as your on the gas straight away before even starting your engine, but it's forgotten after the engine is restarted. I.e. not an adaption reset but more a mood change. I'm by no means an expert but this is what I've heard.
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      04-03-2020, 02:29 PM   #75
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Tried this yesterday on my 18 LCI. No difference.
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      04-04-2020, 11:29 AM   #76
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Quote:
Originally Posted by BallHog5873 View Post
Tried this yesterday on my 18 LCI. No difference.
Yeah you're not going to get a difference because doing this doesn't do anything. Think the original poster is a flat earther lol
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      10-14-2020, 02:37 PM   #77
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Wanted to bump this old thread as a reminder to reset those throttles.
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      10-15-2020, 10:35 AM   #78
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How often it needs to be done? Whenever car feels sluggish?

Can i put car in neutral with parking brake on while doing this just to be safe?
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      10-15-2020, 12:17 PM   #79
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It would be nice if we could get a definitive answer on the validity of this "Reset". I too, agree that it works - but hoping it's not the placebo effect. I really do seem to feel a difference.

Anyone know someone at BMW AG that's high enough up on the engineering ladder to confirm if this really does what we think it's doing?
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      10-15-2020, 01:18 PM   #80
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Quote:
Originally Posted by Canyon Carver View Post
It would be nice if we could get a definitive answer on the validity of this "Reset". I too, agree that it works - but hoping it's not the placebo effect. I really do seem to feel a difference.

Anyone know someone at BMW AG that's high enough up on the engineering ladder to confirm if this really does what we think it's doing?
The reset option is given as a feature on the OEM BMW/Dealership Istep software, so it's definitely a 'procedure' that exists/is coded in the cars software

It worked for me, on numerous cars, and many people feel the difference too. While I don't think its placebo, perhaps the placebo aspect may be related to the extent of increased responsiveness, as in, slight improvements perceived as major improvements
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      10-15-2020, 06:24 PM   #81
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Funny timing on this thread. I was thinking today on my drive home that my gas pedal felt sluggish to respond. It was feeling like I had to push it half-way to the floor to get the RPMs to increase.

I just coded the rev-match turned off function and was playing around with shifting to see if I liked the change when I noticed that blipping the throttle was taking more pedal movement.

I'll have to try this reset function and see if I notice a difference.
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      10-16-2020, 05:14 AM   #82
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Anyone who knows anything about engine management systems will know that Throttle adaptation is used when replacing the throttle potentiometer and has nothing but a short term effect on throttle pedal calibration.
The ECU has some base calibration to fit all throttle pot installs, but it also has a self end travel calibration to make sure each individual install works as it should.

I'll explain that in more detail.

Imagine your throttle pedal has 45 degrees of movement. This is from rest position to buried into the carpet full throttle.
Mounted on this throttle pedal is a potentiometer that's job is to feed the throttle pedal angle to the ECU to represent power request from the driver.
Now, the throttle potentiometer is not a perfect 45 degree item. It's probably got a measurement angle of 90 degrees. Whatever it's range is, it's safe to say it's more than the pedal travel angle. For a reason.
Also, although it mounts in a particular way, the reading of both end positions are not going to be the same for every installation. They also engineer in so that there is float on either end of the pot to absolutely make sure that the pot is within its measurement range. In simple terms, the zero angle on the pedal will always be a positive angle on the pot.
So what we end up with in a new installation is a throttle pedal at zero degrees deflection, but the pot with a positive value. Let's say 15 degrees. If we deflect the pedal the full 45 degrees of mechanical movement, the pot will go from 15 degrees to (15+45) 60 degrees. So a pedal angle of 0-45 will equate to a pot angle of 15-60.
Now, the ECU is base programmed to have a smaller range than this to catch all install outcomes. Let's say it's default program is to work with 30-50 throttle pot range. But it is also taught to self calibrate.
So when the ECU is matched up with the throttle pot, it sees a low value of 15 already, not the 30 it was taught was the lower limit. It adjusts its adaptation to 15 for zero throttle pedal position. But as no one has operated the throttle pedal yet, it still thinks full throttle is 50 on the potentiometer.
The ECU scales zero-to-full automatically between the adaptation values.
So until someone presses the throttle pedal into the carpet, the ECU will always think that 50 is full throttle.
That's why adaptation feels like it does something. It has a shorter range (temporarily) giving more throttle per degree of pedal travel. But the second you apply full throttle? Yes it's back to how it should be, with an adaptation of 15-60 like the mechanical install dictates.

Conclusion: throttle adaptation is the epitome of fake news.
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      10-16-2020, 06:18 AM   #83
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Quote:
Originally Posted by Dav3 View Post
The reset option is given as a feature on the OEM BMW/Dealership Istep software, so it's definitely a 'procedure' that exists/is coded in the cars software
Is the reset option a stand-alone reset or is it part of another procedure?

In other words, is the procedure designed to be used by itself, if needed/wanted, or is it part of another, larger procedure such as replacing the throttle control system?
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      10-16-2020, 12:50 PM   #84
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Quote:
Originally Posted by NISFAN View Post
Anyone who knows anything about engine management systems will know that Throttle adaptation is used when replacing the throttle potentiometer and has nothing but a short term effect on throttle pedal calibration.
The ECU has some base calibration to fit all throttle pot installs, but it also has a self end travel calibration to make sure each individual install works as it should.

I'll explain that in more detail.

Imagine your throttle pedal has 45 degrees of movement. This is from rest position to buried into the carpet full throttle.
Mounted on this throttle pedal is a potentiometer that's job is to feed the throttle pedal angle to the ECU to represent power request from the driver.
Now, the throttle potentiometer is not a perfect 45 degree item. It's probably got a measurement angle of 90 degrees. Whatever it's range is, it's safe to say it's more than the pedal travel angle. For a reason.
Also, although it mounts in a particular way, the reading of both end positions are not going to be the same for every installation. They also engineer in so that there is float on either end of the pot to absolutely make sure that the pot is within its measurement range. In simple terms, the zero angle on the pedal will always be a positive angle on the pot.
So what we end up with in a new installation is a throttle pedal at zero degrees deflection, but the pot with a positive value. Let's say 15 degrees. If we deflect the pedal the full 45 degrees of mechanical movement, the pot will go from 15 degrees to (15+45) 60 degrees. So a pedal angle of 0-45 will equate to a pot angle of 15-60.
Now, the ECU is base programmed to have a smaller range than this to catch all install outcomes. Let's say it's default program is to work with 30-50 throttle pot range. But it is also taught to self calibrate.
So when the ECU is matched up with the throttle pot, it sees a low value of 15 already, not the 30 it was taught was the lower limit. It adjusts its adaptation to 15 for zero throttle pedal position. But as no one has operated the throttle pedal yet, it still thinks full throttle is 50 on the potentiometer.
The ECU scales zero-to-full automatically between the adaptation values.
So until someone presses the throttle pedal into the carpet, the ECU will always think that 50 is full throttle.
That's why adaptation feels like it does something. It has a shorter range (temporarily) giving more throttle per degree of pedal travel. But the second you apply full throttle? Yes it's back to how it should be, with an adaptation of 15-60 like the mechanical install dictates.

Conclusion: throttle adaptation is the epitome of fake news.
What you have written makes sense but from my own experience the throttle reset does something and doesn't 'instantly dissapear' when you press the throttle down

Unless you have some official oem bmw document that describes the function in the same way you've described it, logically, one can also assume that throttle adaptions are part of the ecu to tailor to the driving style of the driver. If you really wanna label it 'fake news', please back it up with official documentation.
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      10-16-2020, 03:18 PM   #85
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Quote:
Originally Posted by Dav3 View Post

What you have written makes sense but from my own experience the throttle reset does something and doesn't 'instantly dissapear' when you press the throttle down

Unless you have some official oem bmw document that describes the function in the same way you've described it, logically, one can also assume that throttle adaptions are part of the ecu to tailor to the driving style of the driver. If you really wanna label it 'fake news', please back it up with official documentation.
It has nothing to do with BMW, the ECU is made by Bosch. This is how they have been for the last few decades and are a standard feature on every Bosch ECU model ever since.

Some one, at some point, has latched onto this crazy notion that the ECU is learning a drivers habits and adapting.... and not only that but it's clearly getting it wrong, so must be untaught. A false interpretation of what throttle adaptation is. So you can see that what you are asking me, is to "prove that unicorns don't exist". I can't. But please knock yourself out resetting it every week. No harm done.
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      10-16-2020, 07:24 PM   #86
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Quote:
Originally Posted by NISFAN View Post
It has nothing to do with BMW, the ECU is made by Bosch. This is how they have been for the last few decades and are a standard feature on every Bosch ECU model ever since.

Some one, at some point, has latched onto this crazy notion that the ECU is learning a drivers habits and adapting.... and not only that but it's clearly getting it wrong, so must be untaught. A false interpretation of what throttle adaptation is. So you can see that what you are asking me, is to "prove that unicorns don't exist". I can't. But please knock yourself out resetting it every week. No harm done.
All I know is that this 'throttle reset adaption' suggestion has been around for more than 15 years, and the majority (2/3 people) notice the improvement

Just because you've spent your lunch break writing a long paragraph with a theory, doesn't mean you're riding said unicorns bro
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      10-17-2020, 02:40 AM   #87
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Quote:
Originally Posted by Dav3 View Post
All I know is that this 'throttle reset adaption' suggestion has been around for more than 15 years, and the majority (2/3 people) notice the improvement

Just because you've spent your lunch break writing a long paragraph with a theory, doesn't mean you're riding said unicorns bro
No, I only deal in facts, there are definitely no unicorns.

I've covered why you will feel a difference. That difference is real but not for the reasons you think it is.

Seriously, if throttle adaptation makes the car better for you, just go out and buy one of those throttle pedal gain devices. Racechip XLR or similar. Or adapt your brain to push your foot down more. Either has the exact same effect.
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      10-17-2020, 10:07 AM   #88
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Quote:
Originally Posted by NISFAN View Post
Quote:
Originally Posted by Dav3 View Post
All I know is that this 'throttle reset adaption' suggestion has been around for more than 15 years, and the majority (2/3 people) notice the improvement

Just because you've spent your lunch break writing a long paragraph with a theory, doesn't mean you're riding said unicorns bro
No, I only deal in facts, there are definitely no unicorns.

I've covered why you will feel a difference. That difference is real but not for the reasons you think it is.

Seriously, if throttle adaptation makes the car better for you, just go out and buy one of those throttle pedal gain devices. Racechip XLR or similar. Or adapt your brain to push your foot down more. Either has the exact same effect.
It's crazy that this thread has dragged on this long and OP doesn't see why lol
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