Hesitation on light acceleration

TeinBMW · 05-05-2020, 10:54 AM

Hopefully there isnt a major issue with my car but I have a I have a 2011 335xi FBO running stage 2+ MHD tune.

I am noticing when I am at a stop light and giving it light throttle it feels as if the car is struggling to move. It is like the car is struggling to turn the wheels. At a low speed (up to 50kmh) I can feel the car vibrate slightly. I feel the vibration is not at the wheels and its the car slightly shaking. I have had my rims re-balanced. At high speeds there are no issues.

I am going to try the following in order:

Tune back to stock and see if I notice the issues
Reset throttle adaption on MHD
Clean the MAF sensor
Tranmission fluid change

Anyone else have this issue and if so how were you able to resolve it?

Groganrocket · 05-05-2020, 08:47 PM

Don’t believe our cars have a maf sensory.

TeinBMW · 05-05-2020, 08:49 PM

Quote:

Originally Posted by Groganrocket

Don’t believe our cars have a maf sensory.

they do! I have the n55 engine.

Groganrocket · 05-05-2020, 08:54 PM

Quote:

Originally Posted by TeinBMW

Quote:

Originally Posted by Groganrocket

Don't believe our cars have a maf sensory.

they do! I have the n55 engine.

My bad I was thinking of n54 motor.

stewbets · 05-09-2020, 10:30 PM

Could it be your driveshaft center support bearing? I experienced vibrations in that speed range when mine was destroyed.

TeinBMW · 05-10-2020, 12:08 PM

Quote:

Originally Posted by stewbets

Could it be your driveshaft center support bearing? I experienced vibrations in that speed range when mine was destroyed.

hmm not sure. I'll do some research and check if that could be it. thank you!

Saif2018 · 05-11-2020, 06:59 AM

Quote:

Originally Posted by TeinBMW

Hopefully there isnt a major issue with my car but I have a I have a 2011 335xi FBO running stage 2+ MHD tune.

I am noticing when I am at a stop light and giving it light throttle it feels as if the car is struggling to move. It is like the car is struggling to turn the wheels. At a low speed (up to 50kmh) I can feel the car vibrate slightly. I feel the vibration is not at the wheels and its the car slightly shaking. I have had my rims re-balanced. At high speeds there are no issues.

I am going to try the following in order:

Tune back to stock and see if I notice the issues
Reset throttle adaption on MHD
Clean the MAF sensor
Tranmission fluid change

Anyone else have this issue and if so how were you able to resolve it?

Do a proper data log, as well.

05-05-2020, 10:54 AM	#1
TeinBMW Lieutenant Colonel 133 Rep 1,945 Posts Drives: 2011 335xi Msport, Conv, Tech Join Date: May 2013 Location: Calgary iTrader: (2) Garage List 2011 BMW 335xi [7.00]	Hesitation on light acceleration Hopefully there isnt a major issue with my car but I have a I have a 2011 335xi FBO running stage 2+ MHD tune. I am noticing when I am at a stop light and giving it light throttle it feels as if the car is struggling to move. It is like the car is struggling to turn the wheels. At a low speed (up to 50kmh) I can feel the car vibrate slightly. I feel the vibration is not at the wheels and its the car slightly shaking. I have had my rims re-balanced. At high speeds there are no issues. I am going to try the following in order: Tune back to stock and see if I notice the issues Reset throttle adaption on MHD Clean the MAF sensor Tranmission fluid change Anyone else have this issue and if so how were you able to resolve it? __________________ \|11 335XI N55 \| M SPORT \| VRSF CP \| BMW PE \| BMS INSTAKE \| VRSF 7" IC \| MHD STAGE 2+ \| ER CP \|
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05-05-2020, 08:47 PM	#2
Groganrocket Captain 384 Rep 992 Posts Drives: 2010 e90 335i and 2015m4 Join Date: Jun 2010 Location: NC iTrader: (0)	Don’t believe our cars have a maf sensory.
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05-09-2020, 10:30 PM	#5
stewbets Captain 449 Rep 823 Posts Drives: '08 335xi, '04 545i Join Date: Sep 2019 Location: Dayton, OH iTrader: (0)	Could it be your driveshaft center support bearing? I experienced vibrations in that speed range when mine was destroyed.
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