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Old 01-12-2003, 10:28 PM   #1
KevinJ_2k1_325ci
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Post Electronic Throttle Adaptation reset procedures

According to BMW's documentation, to reset the throttle adaptation you do the following:

With the car off, turn the ignition to the on position for 10 seconds(do not start) then turn the ignition off for 10 seconds. Then start the car. You should notice slightly improved performance if you normally drive miss daisy.

I have also been told that disconnecting the battery ground for 20 seconds will reset the short term ECU memory but I can't validate that with BMW doco. These steps are necessary if testing or installing new modifications to be able to determine true performance.
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Old 01-12-2003, 10:34 PM   #2
Nick325xiT 5spd
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Hmm...
It would be awfully nice if I didn't have to unplug the battery every time I put gas in.
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Old 01-13-2003, 03:16 AM   #3
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Thumbs Up Thanks for the tip!

Hey Kevin...thanks for the info. I've been thinking that my throttle response deterioriated somewhat after installing my GruppeM and UUC TSExhaust. So I though I'd give both of you're suggestions a try this afternoon. All I can say is...WOW! I didn't really believe it would make such a difference!!! Throttle response is definitely better now!

Keep feeding us these great tips and suggestions
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Old 01-13-2003, 06:00 AM   #4
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Great tip!! I'm gonna try that one
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Old 01-13-2003, 07:18 AM   #5
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Re: Thanks for the tip!

At first I thought the adaptation reset didn't do anything until I got out on the highway this morning. Yeah it worked. I could see and feel spikes in the RPM band. Mostly in the mid and high RPM's. I'm sure the lower RPM's are improved but harder to tell.


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Originally posted by Banker
Hey Kevin...thanks for the info. I've been thinking that my throttle response deterioriated somewhat after installing my GruppeM and UUC TSExhaust. So I though I'd give both of you're suggestions a try this afternoon. All I can say is...WOW! I didn't really believe it would make such a difference!!! Throttle response is definitely better now!

Keep feeding us these great tips and suggestions
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Old 01-14-2003, 07:16 AM   #6
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It might be the cooler temps but I spiked at 6500 RPM this morning

I was shocked, I spiked my redline at 6500 which is the engine max! My car was pulling hard in sport mode on my steptronic akin to when I had my mass air sensor screens off (very close except not as much low end). I tried regular automatic mode and it was fast as hell yesterday unlike it's normal sluggishness. Definitely adaptation reset works and my car is performing better throughout the RPM band. Mostly in the mid and upper RPM.s. I wonder if Dinan is just turning off adaptation or just toning it down? That would suck it that's all their chip does.
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Old 01-14-2003, 07:38 AM   #7
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good tip! need to go and try this!
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Old 01-14-2003, 07:43 AM   #8
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guys will this have the same effect if i already have the dinan software?
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Old 01-14-2003, 07:56 AM   #9
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Sounds great, I'll give it a try!
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Old 01-14-2003, 08:12 AM   #10
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I would hope so!

I would imagine that they are adjusting the fuel/air ratio and spark advance maps. I would imagine that the throttle adaptation still exists.

Quote:
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guys will this have the same effect if i already have the dinan software?
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Old 01-14-2003, 08:41 AM   #11
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But i imagine that when you floor it it still goes the same
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Old 01-14-2003, 08:56 AM   #12
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I'm sorry, but I came in late into this discussion... If I am interpreting correctly what I am reading, are you saying that the onboard computer is adjusting the throttle response based on how we drive? And thus, if you want better throttle response, perform the 10 second thing as stated above, this will reset the throttle response, and if you then drive with a heavy foot from that point forward, the car will react to this and provide better response? Just wondering, because if that's true, I'm going out to my car right now!
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Old 01-14-2003, 09:53 AM   #13
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I also did the 10 second thing and I also noticed some difference.. If the car really got faster??? Maybe.. It feels quicker and it reacts more aggresive to the gas.. the butdyno thinks its faster anyway and that's what counts..

Thanks for this great tip..

One problem though... I do the 10 second thing now almost every morning before I start the car because I want the car to be fast always!!!
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Old 01-14-2003, 09:57 AM   #14
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Re: Electronic Throttle Adaptation reset procedures

Quote:
Originally posted by KevinJ_2k1_325ci
According to BMW's documentation, to reset the throttle adaptation you do the following:

With the car off, turn the ignition to the on position for 10 seconds(do not start) then turn the ignition off for 10 seconds. Then start the car. You should notice slightly improved performance if you normally drive miss daisy.

I have also been told that disconnecting the battery ground for 20 seconds will reset the short term ECU memory but I can't validate that with BMW doco. These steps are necessary if testing or installing new modifications to be able to determine true performance.
i've gotta try this!!!

but when you say "turn the ignition off" what position is that? completely off?
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Old 01-14-2003, 10:32 AM   #15
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Excellent info! I can't wait to give it a try. I spend a lot of time cruising along the hwy. in traffic or just to/from work putzing around at about 2-4k RPM, so I'm sure it's mapped my fuel intake for a soccer mom. I'll play with it next time I take the car out.
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Old 01-14-2003, 10:37 AM   #16
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Quote:
Originally posted by Salvator
I'm sorry, but I came in late into this discussion... If I am interpreting correctly what I am reading, are you saying that the onboard computer is adjusting the throttle response based on how we drive? And thus, if you want better throttle response, perform the 10 second thing as stated above, this will reset the throttle response, and if you then drive with a heavy foot from that point forward, the car will react to this and provide better response? Just wondering, because if that's true, I'm going out to my car right now!
yes that is true...its true for all obdII ecu....but just different ways to reset it for different cars...like for my old prelude...i had to take out the clock fuse from the fuse box and it would temporarily reset everything
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Old 01-14-2003, 10:41 AM   #17
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Question Does it work in 5spd?

I think it only works in Steptronic, coz I do not think 5 spd has the electronic adaptive throttle contol. Could someone verify this. Thanks!
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Old 01-14-2003, 10:59 AM   #18
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It's just throttle response... and i imagine if u drive with a heavy foot it would adapt as such...no need to do it every morning lol...
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Old 01-14-2003, 11:02 AM   #19
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Re: Does it work in 5spd?

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Originally posted by spd
I think it only works in Steptronic, coz I do not think 5 spd has the electronic adaptive throttle contol. Could someone verify this. Thanks!
I'll verify it. I tried it before I left work yesterday and then mildly drove home, but when I left again later and started mashin' I absolutely noticed a difference.

Great Tip!!
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Old 01-14-2003, 11:31 AM   #20
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Re: Re: Does it work in 5spd?

THis should work on all cars with electronic throttle control meaning some later 323 and 328's as well as all 325 and 330's.

I believe 323/328's that were built 10/00-12/00 will have electronic throttle control or what is called "throttle by wire". It is with this new electronic throttle that these 323/328's got the new mototronics that this will work with.

For the old models meaning prior to 10/00, I've been told that you can try turning your ingnition to the on position (not started) and press the gas peddle all the way to the floor 4 times, then you will hear a beep or something and that tells you it worked.


Quote:
Originally posted by sullyz


I'll verify it. I tried it before I left work yesterday and then mildly drove home, but when I left again later and started mashin' I absolutely noticed a difference.

Great Tip!!

Last edited by KevinJ_2k1_325ci; 01-14-2003 at 11:59 AM.
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