Throttle Body Adaptation Reset

philreid · 06-13-2011, 10:30 AM

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.

Billyray911 · 06-13-2011, 02:19 PM

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?

philreid · 06-13-2011, 02:42 PM

I pressed the accelerator all the way to the floor, though I don't know if you have to do it that way.

rich1068 · 06-13-2011, 03:09 PM

Well known on VAG motors so I don't see why BMWs would be any different.

Billyray911 · 06-13-2011, 03:15 PM

Quote:

Originally Posted by philreid

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!

rovers_andy · 06-14-2011, 01:36 PM

Was there much of a difference afterwards?

Billyray911 · 06-14-2011, 01:49 PM

Stand-by!

xenon · 06-15-2011, 02:12 AM

It is a pukka reset procedure.

creepy coupe · 06-15-2011, 02:16 AM

Quote:

Originally Posted by xenon

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.

philreid · 06-16-2011, 08:35 AM

Quote:

Originally Posted by Billyray911

Stand-by!

How'd you get on?

MEGA · 06-16-2011, 11:15 AM

Any point doing tihs on a manual?

willhollin · 06-16-2011, 11:26 AM

Quote:

Originally Posted by MEGA

Any point doing tihs on a manual?

chrismanchr · 06-16-2011, 01:03 PM

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

rich1068 · 06-16-2011, 03:31 PM

This is a ten brake mod if ever there was one.

Billyray911 · 06-16-2011, 08:18 PM

Quote:

Originally Posted by philreid

Quote:

Originally Posted by Billyray911

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!

philreid · 06-17-2011, 03:29 AM

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

Billyray911 · 06-17-2011, 05:25 AM

Quote:

Originally Posted by philreid

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!

chrismanchr · 06-17-2011, 09:50 AM

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

philreid · 06-17-2011, 10:44 AM

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!

zaheer · 06-20-2011, 06:07 AM

im gonna try this

my 335i is feeling like a slug recently...oh wait maybe bcos its a vert :|

ghosty · 06-20-2011, 08:00 AM

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!

Pablo Pablo · 06-20-2011, 03:02 PM

It works! Throttle is sharper, upshifts are smoother and it even sounds a bit throatier through the gears. Nice one.... Any more?

06-13-2011, 10:30 AM	#1
philreid Second Lieutenant 7 Rep 214 Posts Drives: E90 325i M Sport Join Date: Jan 2010 Location: Glasgow, UK iTrader: (0)	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, 02:19 PM	#2
Billyray911 Brigadier General 197 Rep 3,500 Posts Drives: Blah Join Date: Dec 2009 Location: Mind your own business...no,really. iTrader: (6)	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, 02:42 PM	#3
philreid Second Lieutenant 7 Rep 214 Posts Drives: E90 325i M Sport Join Date: Jan 2010 Location: Glasgow, UK iTrader: (0)	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, 03:09 PM	#4
rich1068 has left the building 90 Rep 3,359 Posts Drives: F30 330d M Sport Join Date: Oct 2010 Location: UK iTrader: (0)	Well known on VAG motors so I don't see why BMWs would be any different.
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06-14-2011, 01:36 PM	#6
rovers_andy Private First Class 14 Rep 130 Posts Drives: 335D M-Sport Coupe Join Date: May 2011 Location: Preston,Lancs iTrader: (0)	Was there much of a difference afterwards?
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06-14-2011, 01:49 PM	#7
Billyray911 Brigadier General 197 Rep 3,500 Posts Drives: Blah Join Date: Dec 2009 Location: Mind your own business...no,really. iTrader: (6)	Stand-by!
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06-15-2011, 02:12 AM	#8
xenon Major General 1394 Rep 8,082 Posts Drives: 2021 G21 330i M-Sport Join Date: Jun 2008 Location: Coventry iTrader: (0)	It is a pukka reset procedure. __________________ Ian Current: 2021 G21 330i M-Sport Previous: 2018 A6 Avant S-Line MMI+, 2014 F31 320d M-Sport, 2013 F10 520d M-Sport, 2011 F10 530d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2
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06-16-2011, 11:15 AM	#11
MEGA Dieseasal 204 Rep 6,881 Posts Drives: LCI E92 335d M-Sport Join Date: Jan 2009 Location: Harrow, London iTrader: (2)	Any point doing tihs on a manual? __________________ Previously: 2003 Peugeot 206 1.6 8v \| 2006 E90 320d M-Sport, 19" BBS CH, Full Ice-cold JL audio install, August 2010 Total BMW 6 page feature car. \| 2003 Nissan 350Z GT Coupe 286BHP Now:2010 E92 LCI 335d M-Sport Last edited by MEGA; 06-16-2011 at 11:44 AM..
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06-16-2011, 01:03 PM	#13
chrismanchr Second Lieutenant 17 Rep 228 Posts Drives: 1986 mr2 mk1 Join Date: Mar 2011 Location: manchester england iTrader: (0)	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, 03:31 PM	#14
rich1068 has left the building 90 Rep 3,359 Posts Drives: F30 330d M Sport Join Date: Oct 2010 Location: UK iTrader: (0)	This is a ten brake mod if ever there was one.
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06-17-2011, 03:29 AM	#16
philreid Second Lieutenant 7 Rep 214 Posts Drives: E90 325i M Sport Join Date: Jan 2010 Location: Glasgow, UK iTrader: (0)	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, 09:50 AM	#18
chrismanchr Second Lieutenant 17 Rep 228 Posts Drives: 1986 mr2 mk1 Join Date: Mar 2011 Location: manchester england iTrader: (0)	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, 10:44 AM	#19
philreid Second Lieutenant 7 Rep 214 Posts Drives: E90 325i M Sport Join Date: Jan 2010 Location: Glasgow, UK iTrader: (0)	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, 06:07 AM	#20
zaheer Captain 83 Rep 861 Posts Drives: E93 335i Join Date: Nov 2009 Location: London, UK iTrader: (1)	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, 08:00 AM	#21
ghosty Lieutenant 13 Rep 497 Posts Drives: e92 335d se Join Date: Apr 2010 Location: Essex iTrader: (0) Garage List 2008 335d SE [0.00]	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, 03:02 PM	#22
Pablo Pablo New Member 0 Rep 21 Posts Drives: 2008 E90 335d Join Date: May 2011 Location: Glasgow iTrader: (0)	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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