Autotalent
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques

Post Reply
 
Thread Tools Search this Thread
      05-21-2016, 08:57 PM   #45
YMB_M3
Captain
YMB_M3's Avatar
United_States
227
Rep
658
Posts

Drives: 2018 BSM M3 6MT
Join Date: Feb 2012
Location: Long Island, NY

iTrader: (-1)

Experienced the fuel cut out for the first time yesterday... Also a fast left hand turn. Was chasing down a Mclaren 570S . The car suddenly was just at a loss of power and I had no throttle, I thought the car died on me! A few seconds later the car was running fine after the next corner. No drivetrain malfunction though. I'm not sure exactly how much gas I had in the tank but it read an estimated 10miles left. I think it has to do with being on NT01s instead of my usual RS3s.

Last edited by YMB_M3; 05-21-2016 at 11:43 PM..
Appreciate 0
      05-21-2016, 11:13 PM   #46
larryn
Lieutenant General
United_States
2146
Rep
10,176
Posts

Drives: '97 332ti, '21 X5 45e, '16 GT4
Join Date: May 2005
Location: Seattle

iTrader: (2)

Quote:
Originally Posted by YMB_M3 View Post
Experienced the fuel cut out for the first time yesterday... Also a fast left hand turn. It ruined one of the potentially fastest laps of the day . The car suddenly was just at a loss of power and I had no throttle, I thought the car died on me! A few seconds later the car was running fine after the next corner. No drivetrain malfunction though. I'm not sure exactly how much gas I had in the tank but it read an estimated 10miles left. I think it has to do with being on NT01s instead of my usual RS3s.
Left hander? Wow. Mine was a right hander. I thought the fuel pickup was on the right, making it very difficult to do for a left hander... I am running R comps as well.
Appreciate 0
      05-21-2016, 11:58 PM   #47
YMB_M3
Captain
YMB_M3's Avatar
United_States
227
Rep
658
Posts

Drives: 2018 BSM M3 6MT
Join Date: Feb 2012
Location: Long Island, NY

iTrader: (-1)

Quote:
Originally Posted by larryn View Post
Left hander? Wow. Mine was a right hander. I thought the fuel pickup was on the right, making it very difficult to do for a left hander... I am running R comps as well.
Rewatching the gopro footage I can't tell if it happened after the right or left hander. Also, it was on a different lap than I had remembered but I finally found it lol. Here's the clip, you can tell where I stop accelerating and lose all throttle at the end of the video.

Appreciate 1
      05-29-2016, 12:45 AM   #48
M3 Number 86
Major General
3220
Rep
6,218
Posts

Drives: black m3
Join Date: Mar 2015
Location: pasadena

iTrader: (1)

6.8mpg. Too fuel efficient I need to go faster lol
Attached Images
 
__________________
Appreciate 2
      07-26-2016, 06:59 AM   #49
aboulfad
Brigadier General
aboulfad's Avatar
Canada
1593
Rep
3,945
Posts

Drives: 2015 M4 MG/SO
Join Date: Mar 2014
Location: MTL, QC

iTrader: (0)

Garage List
2015 BMW M4  [10.00]
Ok, went on track with 1/4 tank (btw, look at the fuel gauge, the tick marks are 1/6 ...), which is between the 1st nonzero and 2nd tick mark. After few laps on wet track and one nice drift in a corner, I get a fuel reserve warning, and the needle kinda dropped quickly between 0 and first tick, closer to first tick.

Few laps after, I get the annoying constant warning of less than 50km range, I finish the session with the fuel needle closer to zero with range of 43km.

When I leave the track, the needle mysteriously moves up to above the first nonzero tick mark, and suddenly I have 80km range...

I never got limp mode, and never was pushing the car... I know the fuel consumption/range are not accurate, but what's up with the needle?!?
Attached Images
 
Appreciate 0
      07-26-2016, 08:03 AM   #50
stranger
Captain
United Kingdom
235
Rep
982
Posts

Drives: BMW M3
Join Date: Sep 2014
Location: London

iTrader: (0)

the guage moves according to your range which is measured on how your driving

Atleast that what ive notices

Can say 30 miles remaining, when I come off and cruise to the petrol station the needle and range goes up
Appreciate 0
      07-26-2016, 10:26 AM   #51
aboulfad
Brigadier General
aboulfad's Avatar
Canada
1593
Rep
3,945
Posts

Drives: 2015 M4 MG/SO
Join Date: Mar 2014
Location: MTL, QC

iTrader: (0)

Garage List
2015 BMW M4  [10.00]
Quote:
Originally Posted by stranger
the guage moves according to your range which is measured on how your driving

Atleast that what ive notices

Can say 30 miles remaining, when I come off and cruise to the petrol station the needle and range goes up
Ok that explains it, so the gauge is tied to the same incorrect fuel consumption estimation and somewhat probably the high lateral g forces I experienced during the unintentional drift must have upset something temporarily!
Appreciate 0
      07-27-2016, 10:53 AM   #52
CanAutM3
General
CanAutM3's Avatar
Canada
21105
Rep
20,741
Posts

Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal

iTrader: (1)

Garage List
Quote:
Originally Posted by aboulfad View Post
Ok that explains it, so the gauge is tied to the same incorrect fuel consumption estimation and somewhat probably the high lateral g forces I experienced during the unintentional drift must have upset something temporarily!
From what I know, that is incorrect. The fuel gauge reads whatever is in the tank and is usually rather accurate. Each tick mark is worth 10 liters. The range is extrapolated from what is left in the tank and your driving style.

When you drive aggressively around a track, the fuel splashes all over the place falsifying the fuel gauge reading, which invariably has an effect on range. Further, since you are driving aggressively around the track, you will see a much shorter range. I get the 50km warning with well over 10 liters in the tank.
__________________
Porsche 911 turbo 2021 992 GT Silver

Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black
Appreciate 1
aboulfad1592.50
      07-27-2016, 12:02 PM   #53
stranger
Captain
United Kingdom
235
Rep
982
Posts

Drives: BMW M3
Join Date: Sep 2014
Location: London

iTrader: (0)

Quote:
Originally Posted by CanAutM3 View Post
From what I know, that is incorrect. The fuel gauge reads whatever is in the tank and is usually rather accurate. Each tick mark is worth 10 liters. The range is extrapolated from what is left in the tank and your driving style.

When you drive aggressively around a track, the fuel splashes all over the place falsifying the fuel gauge reading, which invariably has an effect on range. Further, since you are driving aggressively around the track, you will see a much shorter range. I get the 50km warning with well over 10 liters in the tank.
But I'm sure I get this on the motorway aswell

I'll pay more attention next time it gets low
Appreciate 0
      07-31-2016, 02:23 PM   #54
FLOSS M
///M3
FLOSS M's Avatar
No_Country
386
Rep
1,123
Posts

Drives: 22 M3 X-Drive
Join Date: May 2008
Location: NJ

iTrader: (1)

I fill up after every 2 runs - no issues doing it that way
Appreciate 0
      07-31-2016, 06:36 PM   #55
larryn
Lieutenant General
United_States
2146
Rep
10,176
Posts

Drives: '97 332ti, '21 X5 45e, '16 GT4
Join Date: May 2005
Location: Seattle

iTrader: (2)

Quote:
Originally Posted by FLOSS M View Post
I fill up after every 2 runs - no issues doing it that way
Ran a fairly open event yesterday at Ridge Motorsports Park and could not get two full 30 minute sessions without starvation on the second session. Same corner every time, and anywhere near 1/6 tank.

Each time I hit starvation, it would bog for 3-4 seconds (quite dangeous in this +100mph sweeper, as you track out). One time it went into complete limp mode, and throttle response never returned until I shut the car off and turned it on again - obviously limped off track.

The danger in where this happens in not just completely making the car unstable (think of lifting the throttle completely mid-high-G corner), but when you have cars on your tail with nowhere to go...

FWIW, I set a new personal best at this track yesterday @ 1:50.8, which is running with incredibly fast cars and talented drivers.
Appreciate 0
      08-04-2016, 10:52 PM   #56
MasterP
Colonel
720
Rep
2,342
Posts

Drives: All the M's
Join Date: Aug 2012
Location: Where do you want me?

iTrader: (8)

Supposedly the GTS has a fuel pickup arrangement that solves this.
Appreciate 0
      08-05-2016, 05:43 AM   #57
SYT_Shadow
///M Powered for Life
SYT_Shadow's Avatar
11421
Rep
10,294
Posts

Drives: E90M/E92M/M4GTS/M4GT4/X5M
Join Date: Sep 2010
Location: Greenwich, CT

iTrader: (2)

Quote:
Originally Posted by TrakBch View Post
Supposedly the GTS has a fuel pickup arrangement that solves this.
It looks like the regular M3/4 needs the GTS goodies just to be on par with the previous generation M3 in two areas:
-fuel pickup
-oiling system. Stock car is capable of only 1.2g whereas GTS and previous M do 1.4
Appreciate 0
      08-05-2016, 05:45 AM   #58
SYT_Shadow
///M Powered for Life
SYT_Shadow's Avatar
11421
Rep
10,294
Posts

Drives: E90M/E92M/M4GTS/M4GT4/X5M
Join Date: Sep 2010
Location: Greenwich, CT

iTrader: (2)

Quote:
Originally Posted by larryn View Post
Ran a fairly open event yesterday at Ridge Motorsports Park and could not get two full 30 minute sessions without starvation on the second session. Same corner every time, and anywhere near 1/6 tank.

Each time I hit starvation, it would bog for 3-4 seconds (quite dangeous in this +100mph sweeper, as you track out). One time it went into complete limp mode, and throttle response never returned until I shut the car off and turned it on again - obviously limped off track.

The danger in where this happens in not just completely making the car unstable (think of lifting the throttle completely mid-high-G corner), but when you have cars on your tail with nowhere to go...

FWIW, I set a new personal best at this track yesterday @ 1:50.8, which is running with incredibly fast cars and talented drivers.
This is the single worst thing I've heard so far. If true it would definitely complicate my plans for an F80

Were you full before going out the first time?

Are you tuned?

Last edited by SYT_Shadow; 08-05-2016 at 11:51 AM..
Appreciate 0
      08-05-2016, 06:13 AM   #59
CanAutM3
General
CanAutM3's Avatar
Canada
21105
Rep
20,741
Posts

Drives: 2021 911 turbo
Join Date: Jan 2012
Location: Montreal

iTrader: (1)

Garage List
Quote:
Originally Posted by TrakBch View Post
Supposedly the GTS has a fuel pickup arrangement that solves this.
IIRC, this new pick-up was also implemented on all F8X.
__________________
Porsche 911 turbo 2021 992 GT Silver

Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black
Appreciate 0
      08-05-2016, 09:17 AM   #60
SYT_Shadow
///M Powered for Life
SYT_Shadow's Avatar
11421
Rep
10,294
Posts

Drives: E90M/E92M/M4GTS/M4GT4/X5M
Join Date: Sep 2010
Location: Greenwich, CT

iTrader: (2)

Quote:
Originally Posted by CanAutM3 View Post
IIRC, this new pick-up was also implemented on all F8X.
I looked in the GTS technical documentation PDF and saw mention of a special 'strainer' but nothing else.
If you have a PN we can check realoem!
Appreciate 0
      08-05-2016, 09:20 AM   #61
shaftwhy
Second Lieutenant
87
Rep
242
Posts

Drives: 2016 M3
Join Date: Jun 2016
Location: Seattle

iTrader: (0)

Garage List
2016 BMW M3  [0.00]
1:50.8 on that track is blazing fast But it sucks to have this issue at turn 9.

Quote:
Originally Posted by larryn View Post
Ran a fairly open event yesterday at Ridge Motorsports Park and could not get two full 30 minute sessions without starvation on the second session. Same corner every time, and anywhere near 1/6 tank.

Each time I hit starvation, it would bog for 3-4 seconds (quite dangeous in this +100mph sweeper, as you track out). One time it went into complete limp mode, and throttle response never returned until I shut the car off and turned it on again - obviously limped off track.

The danger in where this happens in not just completely making the car unstable (think of lifting the throttle completely mid-high-G corner), but when you have cars on your tail with nowhere to go...

FWIW, I set a new personal best at this track yesterday @ 1:50.8, which is running with incredibly fast cars and talented drivers.
Appreciate 0
      08-05-2016, 09:41 AM   #62
Gearhead999s
Major General
Gearhead999s's Avatar
812
Rep
7,888
Posts

Drives: RR Velar R=Dynamic M2C R1200GS
Join Date: Apr 2007
Location: Toronto

iTrader: (0)

I have never had this issue with my F82.I normally will run till the low fuel light comes on and then a few more laps.I normally get about 55 total minutes out of a tank.
Appreciate 0
      08-05-2016, 04:19 PM   #63
redpriest
Colonel
redpriest's Avatar
2146
Rep
2,527
Posts

Drives: 2011 M3/Porsche 992 GT3RS
Join Date: Apr 2014
Location: Bay Area, CA

iTrader: (0)

Garage List
Quote:
Originally Posted by SYT_Shadow View Post
It looks like the regular M3/4 needs the GTS goodies just to be on par with the previous generation M3 in two areas:
-fuel pickup
-oiling system. Stock car is capable of only 1.2g whereas GTS and previous M do 1.4
Where did you get the information about the stock F8X only being capable of 1.2G?
__________________
'06 BMW M3 ZCP 6MT | JRZ RS Pro + Hyperco 650/750 | Epic Tune | Brembo 355mm BBK | too many to list
'11 BMW M3 ZCP DCT | Akra Evolution | Eventuri intake | MCS 3-way | 4.6L Carbahn S65 | Zebulon Aero | AP Racing Radi-CAL BBK by Essex | 305/645-18 Pirelli DHB
Porsche 992 GT3, 991.2 GT3RS, 718 Spyder
instagram.com/titomanlio
Appreciate 0
      08-05-2016, 10:47 PM   #64
larryn
Lieutenant General
United_States
2146
Rep
10,176
Posts

Drives: '97 332ti, '21 X5 45e, '16 GT4
Join Date: May 2005
Location: Seattle

iTrader: (2)

Quote:
Originally Posted by SYT_Shadow View Post
This is the single worst thing I've heard so far. If true it would definitely complicate my plans for an F80

Were you full before going out the first time?

Are you tuned?
I am tuned. These were 30 minute sessions, and I could not do two 30 min sessions with a full tank. I can do two 20 minute sessions at this track.

I have the Dinan stage 2 tune, intake and exhaust. Plus, 275/305 NT01s, Ground Control coilover conversion and camber plates, and Pagid RS29s.

I'm not a mellow driver at the track...
Appreciate 0
      08-05-2016, 10:49 PM   #65
larryn
Lieutenant General
United_States
2146
Rep
10,176
Posts

Drives: '97 332ti, '21 X5 45e, '16 GT4
Join Date: May 2005
Location: Seattle

iTrader: (2)

Quote:
Originally Posted by shaftwhy View Post
1:50.8 on that track is blazing fast But it sucks to have this issue at turn 9.
I was pretty happy with that time. 5 seconds faster than my similary prepared E92 M3 went around it last year.
Appreciate 0
      08-05-2016, 11:35 PM   #66
shaftwhy
Second Lieutenant
87
Rep
242
Posts

Drives: 2016 M3
Join Date: Jun 2016
Location: Seattle

iTrader: (0)

Garage List
2016 BMW M3  [0.00]
Wow, big improvement. I just hope I can do less than 2:00 some day soon

Quote:
Originally Posted by larryn View Post
I was pretty happy with that time. 5 seconds faster than my similary prepared E92 M3 went around it last year.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 06:15 AM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST