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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Throttle Body Adaptation Reset



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      06-13-2011, 11:30 AM   #1
philreid
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Throttle Body Adaptation Reset

Hi all.

I've got a 325i with the 3 litre engine and my Dad has a 330D, both with AT.

I've always thought my car was a bit sluggish in the throttle response, especially when in D - and this was confirmed when I drove my Dad's car. Of course, his is a 330D and mine is a 325i so there are going to be fundamental differences since his is a faster car and is also a diesel where mine's a petrol, but I just felt like my car was underperforming.

So I dug around a bit and uncovered this forum post which outlines a process called 'Throttle Body Adaptation Reset'.

I was pretty skeptical at first, but I tried it and I swear it's like driving a new car. The throttle response is much quicker, the car revs a little higher before changing up the gears, and it's altogether a lot more fun to drive.

Of course, I could have just put it into DS or manual mode, but I found that those modes are both more performant now, too.

Have any of you guys tried this? There seems to be some discussion around whether this is a genuinely functional process and whether it's just some kind of placebo - but I swear it worked for me.

Basically the process I followed was:

1. Never touch the break pedal & key remains inserted the entire time
2. Insert key and push START Button
3. Press and HOLD accelerator pedal for 30 seconds (some say 5, some say 25 seconds - I did 30 to be sure).
4. WITHOUT RELEASING THE ACCELERATOR PEDAL, push the START Button
5. Release accelerator pedal
6. Wait full 2 minutes
7. Start car normally

I'm probably going to be at the petrol station a bit more often now, but I feel like the car now drives the way I'd hoped when I bought it.

But maybe it is just a placebo and I've gone mad.
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      06-13-2011, 03:19 PM   #2
Billyray911
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Reading the link,seems like it may just work!
I'm going to try it anyway.
Out of curiosity,when you depress the accelerator,did you push it to the floor or midway?
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      06-13-2011, 03:42 PM   #3
philreid
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I pressed the accelerator all the way to the floor, though I don't know if you have to do it that way.
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      06-13-2011, 04:09 PM   #4
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Well known on VAG motors so I don't see why BMWs would be any different.
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      06-13-2011, 04:15 PM   #5
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Quote:
Originally Posted by philreid View Post
I pressed the accelerator all the way to the floor, though I don't know if you have to do it that way.
That's what il do then-cheers!
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      06-14-2011, 02:36 PM   #6
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Was there much of a difference afterwards?
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      06-14-2011, 02:49 PM   #7
Billyray911
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Stand-by!
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      06-15-2011, 03:12 AM   #8
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It is a pukka reset procedure.
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      06-15-2011, 03:16 AM   #9
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Quote:
Originally Posted by xenon View Post
It is a pukka reset procedure.
Indeed, in fact I'm running the Wife's Mini to the dealers on Saturday, for the very reset. 15 minute job I'm told.
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      06-16-2011, 09:35 AM   #10
philreid
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Quote:
Originally Posted by Billyray911 View Post
Stand-by!
How'd you get on?
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      06-16-2011, 12:15 PM   #11
MEGA
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Send a message via MSN to MEGA
Any point doing tihs on a manual?

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Last edited by MEGA; 06-16-2011 at 12:44 PM.
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      06-16-2011, 12:26 PM   #12
willhollin
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Originally Posted by MEGA View Post
Any point doing tihs on a manual?
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      06-16-2011, 02:03 PM   #13
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thanks for this post ,ive got a 325i manual ,the throttles been a bit 'bitty' lol for a while well since i bought it ,just done this throttle reset and yea it feels better str8 away ,i could tell it was better backing off the drive lol
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      06-16-2011, 04:31 PM   #14
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This is a ten brake mod if ever there was one.
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      06-16-2011, 09:18 PM   #15
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Quote:
Originally Posted by philreid View Post
Quote:
Originally Posted by Billyray911 View Post
Stand-by!
How'd you get on?
Ok,I did the reset before I went to work.
I have found my car (335d) a bit underwhelming and lethargic-especially in accelerating from stand still.
After the reset,I could immediately feel a difference across the board-it actually reacts as it did when previously in sports mode.
To conclude,worth the 2 minutes spent-do it...now!
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      06-17-2011, 04:29 AM   #16
philreid
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I'm still enjoying the novelty of my new faster car. Sometimes I crap myself because it's so keen to get going now where I had to coax it into moving before.

Glad it worked for you guys too
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      06-17-2011, 06:25 AM   #17
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Quote:
Originally Posted by philreid View Post
I'm still enjoying the novelty of my new faster car. Sometimes I crap myself because it's so keen to get going now where I had to coax it into moving before.

Glad it worked for you guys too
Exactly how I was feeling-cheers!
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      06-17-2011, 10:50 AM   #18
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same here ,what a great thread and mod ,i was gonna take it to a garage to get looked at because it wasnt right ,I shall not bother now lol
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      06-17-2011, 11:44 AM   #19
philreid
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Before I did the reset, it kind of felt like the car was farting some of its power through the exhaust before it actually accelerated - no longer!
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      06-20-2011, 07:07 AM   #20
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im gonna try this my 335i is feeling like a slug recently...oh wait maybe bcos its a vert :|
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      06-20-2011, 09:00 AM   #21
ghosty
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this sounds interesting, think im gonna have to save this link for future, when i feel the car needs a bit of freshening up. cheers!
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      06-20-2011, 04:02 PM   #22
Pablo Pablo
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It works! Throttle is sharper, upshifts are smoother and it even sounds a bit throatier through the gears. Nice one.... Any more?
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