Does using Sport or Sport Extra mode affect TA's

Merlin_83 · 07-11-2019, 08:56 AM

Greetings,

I read a post the other day that referenced there's a possible connection with throttle actuators and the M mode set to Sport or Sport Extra.

Does having Sport of Sport Extra make the TA's work harder or something?

Thanks,
Merlin

Ab28 · 07-11-2019, 09:04 AM

The throttle response is increased, so the TAs are turning slightly faster than they otherwise would.

The connection between the two is moot. Some drive in sport all the time, some never.

They wear out because of the crap plastic gears BMW used (and the mosfets overheat).

I've replaced them many times in both my E9x cars and for friends. We all have different driving habits, but the TAs all suffered the same fate. The mileage spectrum in which they fail is quite wide. My first 08 needed them at 41k miles. My second was good until 111k.

Drive in whatever modes you want and replace them when it happens.

6ixSpd · 07-11-2019, 10:45 AM

What is this Sport Extra you speak of?

Bartledoo · 07-11-2019, 11:43 AM

The actuators provide greater angular acceleration to the throttles in sport mode via greater force. It appears that the actuator components that fail are operating well above their fatigue limits, so it seems reasonable to think that sport/+ would speed things up.

kyrix1st · 07-11-2019, 11:43 AM

Quote:

Originally Posted by 6ixSpd

What is this Sport Extra you speak of?

More like taking off all the hassle..

amrazM · 07-11-2019, 09:30 PM

dct downshifts are worse

M3anest · 07-11-2019, 10:36 PM

Quote:

Originally Posted by amrazM

dct downshifts are worse

Well.. I'm guilty.

Bartledoo · 07-11-2019, 11:32 PM

Quote:

Originally Posted by amrazM

dct downshifts are worse

Truth! Haha

Scrippy · 07-12-2019, 05:19 PM

Really who gives two shits? Just enjoy the car people. Jesus Christ TA & RB questions/worry is annoying!

drrust · 07-12-2019, 05:36 PM

Quote:

Originally Posted by Bartledoo

The actuators provide greater angular acceleration to the throttles in sport mode via greater force. It appears that the actuator components that fail are operating well above their fatigue limits, so it seems reasonable to think that sport/+ would speed things up.

The failures are wear, please link any information that suggests it is fatigue. If fatigue was the cause there would be broken teeth.

Bartledoo · 07-12-2019, 07:24 PM

Quote:

Originally Posted by drrust

The failures are wear, please link any information that suggests it is fatigue. If fatigue was the cause there would be broken teeth.

The mosfets are the actual failure point.

07-11-2019, 08:56 AM	#1
Merlin_83 Merlin 474 Rep 730 Posts Drives: 2012 BMW M3 6MT w/ZCP Join Date: Feb 2014 Location: United States iTrader: (0) Garage List 2012 BMW M3 ZCP [0.00] 2008 BMW 335i [0.00] 2008 BMW 335xi [0.00]	Does using Sport or Sport Extra mode affect TA's Greetings, I read a post the other day that referenced there's a possible connection with throttle actuators and the M mode set to Sport or Sport Extra. Does having Sport of Sport Extra make the TA's work harder or something? Thanks, Merlin __________________ 2012 E92 M3 ZCP \| 2008 E90 335xi \| 2008 E90 335i \|
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07-11-2019, 09:04 AM	#2
Ab28 Captain 593 Rep 726 Posts Drives: E90 M3/E39 M5/128i Join Date: Jan 2017 Location: . iTrader: (3)	The throttle response is increased, so the TAs are turning slightly faster than they otherwise would. The connection between the two is moot. Some drive in sport all the time, some never. They wear out because of the crap plastic gears BMW used (and the mosfets overheat). I've replaced them many times in both my E9x cars and for friends. We all have different driving habits, but the TAs all suffered the same fate. The mileage spectrum in which they fail is quite wide. My first 08 needed them at 41k miles. My second was good until 111k. Drive in whatever modes you want and replace them when it happens. Last edited by Ab28; 07-11-2019 at 09:25 AM..
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07-11-2019, 10:45 AM	#3
6ixSpd Save the manuals! 6015 Rep 6,746 Posts Drives: '16 M3, '23 718 Spyder Join Date: Feb 2016 Location: 416 iTrader: (4)	What is this Sport Extra you speak of? __________________ '16 M3 \| '23 718 Spyder Past: E92 M3, F87 M2, E39 M5, etc
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07-11-2019, 11:43 AM	#4
Bartledoo Driver 2692 Rep 2,714 Posts Drives: 2011 E90 M3 6MT Join Date: Aug 2015 Location: Seattle, WA iTrader: (0) Garage List 2023 Corvette Stingray [0.00] 2002 Porsche Boxster [0.00] 2011 E90 M3 [0.00] 2021 Tesla Model Y [0.00]	The actuators provide greater angular acceleration to the throttles in sport mode via greater force. It appears that the actuator components that fail are operating well above their fatigue limits, so it seems reasonable to think that sport/+ would speed things up. __________________ E90M 6MT Slicktop Single Humper in need of a diet
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07-11-2019, 09:30 PM	#6
amrazM mTekMods 2142 Rep 2,902 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	dct downshifts are worse
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07-12-2019, 05:19 PM	#9
Scrippy Lord Scrip 1813 Rep 3,013 Posts Drives: 2011 M3 Coupe Join Date: Jan 2012 Location: LA,Ca iTrader: (0) Garage List [0.00] 2007 BMW 335i [0.00]	Really who gives two shits? Just enjoy the car people. Jesus Christ TA & RB questions/worry is annoying! __________________
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