My 335i has multiple personalities, why?

SpeedracerIndy · 07-11-2016, 03:19 PM

My 2011 335i 6AT xdrive seems to have multiple personalities. I'm not sure if it's the tune (Cobb with a PTF custom tune) or the car, or some setting I'm unaware of.

One day I will get in it and it will feel very peppy. The throttle will be very sensitive to input, and the transmission will be very eager to downshift. This is in Drive (not sport). Then the next day, it will be very sluggish or lazy. The throttle will take more travel to get the same amount of power, and the transmission is reluctant to downshift.

It doesn't seem to follow any pattern either. It seems like most of the time it is in lazy mode, then every few days I'll get a trip in peppy mode. I need to start taking a log of when it decides to put itself in peppy mode.

Anyone have any idea what could cause this? I'd love to be able to control it and have a consistent throttle and transmission behavior.

Swish · 07-11-2016, 10:22 PM

Quote:

Originally Posted by SpeedracerIndy

My 2011 335i 6AT xdrive seems to have multiple personalities. I'm not sure if it's the tune (Cobb with a PTF custom tune) or the car, or some setting I'm unaware of.

One day I will get in it and it will feel very peppy. The throttle will be very sensitive to input, and the transmission will be very eager to downshift. This is in Drive (not sport). Then the next day, it will be very sluggish or lazy. The throttle will take more travel to get the same amount of power, and the transmission is reluctant to downshift.

It doesn't seem to follow any pattern either. It seems like most of the time it is in lazy mode, then every few days I'll get a trip in peppy mode. I need to start taking a log of when it decides to put itself in peppy mode.

Anyone have any idea what could cause this? I'd love to be able to control it and have a consistent throttle and transmission behavior.

This is not my area of expertise, but I read something about the need to change them. Perhaps that's the reason for the sluggish ride?

Socket · 07-12-2016, 02:53 AM

Have you tried resetting the adaptions?

BSM n54iS · 07-12-2016, 05:45 AM

Remember that thread 'is your car a guy or girl'? ...Yours is a female OP

..no offense to the lovely ladies of course

SpeedracerIndy · 07-12-2016, 11:06 AM

I've heard mixed reviews about a resetting throttle adaptations and multiple ways to supposedly do it. Has anyone ever proved it works, or is it just internet folklore? I suppose it can't hurt to try it.

SpeedracerIndy · 08-31-2016, 07:54 AM

I detected a slight change in the behavior when I did that reset procedure, but it didn't get any better.

I just uninstalled the Cobb with protuning freaks tune and put the stock tune back and the car drives much better, although with a lot less power. Shift points are more smooth and predictable, idle is MUCH smoother and the car is much more predictable all around. It seems as though the pro tuning freaks tune confuses the transmission. I've reached out to them to see if there is a way they can smooth it out.

Welcome to NBA Jam · 08-31-2016, 08:07 AM

Have you taken it to a vehicle therapist?

mike@x-ph.com · 08-31-2016, 12:34 PM

Op,
Try resetting adaptation

Quote:

Originally Posted by Black n54is

Remember that thread 'is your car a guy or girl'? ...Yours is a female OP

..no offense to the lovely ladies of course

LOL

John 070 · 08-31-2016, 01:20 PM

Quote:

Originally Posted by Welcome to NBA Jam

Have you taken it to a vehicle therapist?

Don't fall for the one size fits all "German Car Therapists." They try to act like they can analyze all German cars. Stuttgart is over 230 km from Munich, I once did the therapy route with one from Sindlefingen. We were almost done with the session and the therapist goes, "oh, Ihr Auto ist aus Bayern ?" That's 200 Euro I'll never get back.

007_e350 · 08-31-2016, 01:41 PM

Can't speak for tranny but my car used to be very moody till i put in the 7" fmic ... IATs were pulling timing and making the car different every time it got hot outside, since the bigger fmic got in and mhd stg 1 + tune just feels the same all year long ...

Seattlesquash · 09-04-2016, 10:12 PM

Quote:

Originally Posted by Welcome to NBA Jam

Have you taken it to a vehicle therapist?

Or like the The Brothers Grimsby would say "the rapist"

ThatRWD · 09-04-2016, 11:41 PM

Quote:

Originally Posted by 007_e350

Can't speak for tranny but my car used to be very moody till i put in the 7" fmic ... IATs were pulling timing and making the car different every time it got hot outside, since the bigger fmic got in and mhd stg 1 + tune just feels the same all year long ...

I have a similar problem OP, and from what I've read on how to fix it I agree with 007.

07-11-2016, 03:19 PM	#1
SpeedracerIndy Enlisted Member 8 Rep 32 Posts Drives: 2011 E90 335i xdrive Join Date: Aug 2015 Location: Indianapolis iTrader: (0)	My 335i has multiple personalities, why? My 2011 335i 6AT xdrive seems to have multiple personalities. I'm not sure if it's the tune (Cobb with a PTF custom tune) or the car, or some setting I'm unaware of. One day I will get in it and it will feel very peppy. The throttle will be very sensitive to input, and the transmission will be very eager to downshift. This is in Drive (not sport). Then the next day, it will be very sluggish or lazy. The throttle will take more travel to get the same amount of power, and the transmission is reluctant to downshift. It doesn't seem to follow any pattern either. It seems like most of the time it is in lazy mode, then every few days I'll get a trip in peppy mode. I need to start taking a log of when it decides to put itself in peppy mode. Anyone have any idea what could cause this? I'd love to be able to control it and have a consistent throttle and transmission behavior.
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07-12-2016, 02:53 AM	#3
Socket Lieutenant General 4542 Rep 11,903 Posts Drives: 335i Join Date: Nov 2014 Location: Australia iTrader: (4) Garage List 2008 BMW E92 [0.00]	Have you tried resetting the adaptions?
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07-12-2016, 05:45 AM	#4
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Remember that thread 'is your car a guy or girl'? ...Yours is a female OP ..no offense to the lovely ladies of course __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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07-12-2016, 11:06 AM	#5
SpeedracerIndy Enlisted Member 8 Rep 32 Posts Drives: 2011 E90 335i xdrive Join Date: Aug 2015 Location: Indianapolis iTrader: (0)	I've heard mixed reviews about a resetting throttle adaptations and multiple ways to supposedly do it. Has anyone ever proved it works, or is it just internet folklore? I suppose it can't hurt to try it.
	Appreciate 0 Quote

08-31-2016, 07:54 AM	#6
SpeedracerIndy Enlisted Member 8 Rep 32 Posts Drives: 2011 E90 335i xdrive Join Date: Aug 2015 Location: Indianapolis iTrader: (0)	I detected a slight change in the behavior when I did that reset procedure, but it didn't get any better. I just uninstalled the Cobb with protuning freaks tune and put the stock tune back and the car drives much better, although with a lot less power. Shift points are more smooth and predictable, idle is MUCH smoother and the car is much more predictable all around. It seems as though the pro tuning freaks tune confuses the transmission. I've reached out to them to see if there is a way they can smooth it out.
	Appreciate 0 Quote

08-31-2016, 08:07 AM	#7
Welcome to NBA Jam Is it the shoes!? 3884 Rep 5,112 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	Have you taken it to a vehicle therapist?
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08-31-2016, 01:41 PM	#10
007_e350 Lieutenant Colonel 217 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	Can't speak for tranny but my car used to be very moody till i put in the 7" fmic ... IATs were pulling timing and making the car different every time it got hot outside, since the bigger fmic got in and mhd stg 1 + tune just feels the same all year long ...
	Appreciate 0 Quote