[philreid]

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]

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]

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

[rich1068]

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

[Billyray911]

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]

Was there much of a difference afterwards?

[Billyray911]

Stand-by!

[xenon]

It is a pukka reset procedure.

[creepy coupe]

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]

Originally Posted by Billyray911

Stand-by!

How'd you get on?

[MEGA]

Any point doing tihs on a manual?

[willhollin]

Originally Posted by MEGA

Any point doing tihs on a manual?

[chrismanchr]

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]

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

[Billyray911]

Originally Posted by philreid

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]

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]

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]

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]

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]

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

[ghosty]

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]

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