BMW M3 Forum (E90 E92)

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


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques
 
BPM
Post Reply
 
Thread Tools Search this Thread
      07-27-2022, 06:35 PM   #21781
Hein Jockins
Second Lieutenant
Hein Jockins's Avatar
89
Rep
203
Posts

Drives: 2017 340, 08 E92 M3
Join Date: Jul 2021
Location: ALABAMA

iTrader: (0)

Quote:
Originally Posted by M eyedoc View Post
Electrical question for the group: Having charging/voltage issues. Difficulties starting car lasr fall. Originally thought it was a battery so I replaced it with an original type AGM battery. Good for a short time but problems returned at Mid Ohio in May. Slowing crank throughout the weekend until it lit up the dash with lights and stranded me in Park in the grid line for a 40min session. Unhooked and rehooked the battery, packed up and it got me home. OK, must be the alternator. Replaced it with OEM (not rebuilt). Bought foxwell scanner for codes. Cleared lots of codes. Ran relatively well for a day and it went back to throwing enough codes to light a Christmas tree. Took new alternator out again to have tested and of course it passed (as did the original alternator). Had battery tested, low on charge but healthy. One of my favorite codes: "alternator not found". Ordered replacement alternator in case it was a deffective. And of course same results. Voltage (after charging battery) 12.9V and drops with lights an AC. Does increase slightly when revving engine and driving but only to about 13V max. Took it to the track over the weekend hoping the new alternator would make it and had the charge battery between every run (did at least get PB lap) Does anyone have a recommendation before I drive it into a lake in frustration?
Before I replaced my alternator and was researching probable causes for battery drain, I read a faulty EDC module can continue to drain battery whilst the car is off. Worth looking into, and there's several forum posts about it here. I'm sure some other members might have other suggestions as well though.
Appreciate 0
      07-27-2022, 07:25 PM   #21782
Redd
Brigadier General
3591
Rep
3,926
Posts

Drives: 2010 BMW E92 M3 Dakar Edition
Join Date: Jul 2015
Location: Malaysia

iTrader: (0)

Quote:
Originally Posted by M eyedoc View Post
Electrical question for the group: Having charging/voltage issues. Difficulties starting car lasr fall. Originally thought it was a battery so I replaced it with an original type AGM battery. Good for a short time but problems returned at Mid Ohio in May. Slowing crank throughout the weekend until it lit up the dash with lights and stranded me in Park in the grid line for a 40min session. Unhooked and rehooked the battery, packed up and it got me home. OK, must be the alternator. Replaced it with OEM (not rebuilt). Bought foxwell scanner for codes. Cleared lots of codes. Ran relatively well for a day and it went back to throwing enough codes to light a Christmas tree. Took new alternator out again to have tested and of course it passed (as did the original alternator). Had battery tested, low on charge but healthy. One of my favorite codes: "alternator not found". Ordered replacement alternator in case it was a deffective. And of course same results. Voltage (after charging battery) 12.9V and drops with lights an AC. Does increase slightly when revving engine and driving but only to about 13V max. Took it to the track over the weekend hoping the new alternator would make it and had the charge battery between every run (did at least get PB lap) Does anyone have a recommendation before I drive it into a lake in frustration?
Unplug your IBS (small blue connector at your battery negative cable) and see if the problem goes away. If it does you need to replace the negative cable because the IBS is attached to it.

Another possible culprit is the big red power cable behind the main fuse box inside your glove box. Look for discoloration on the shielding of the cable, especially at the fuse box end. We've been seeing this happen more frequently as the car ages.
Appreciate 0
      07-27-2022, 08:11 PM   #21783
derbo
Derbo Tuning
derbo's Avatar
3417
Rep
2,931
Posts

Drives: BMW M3
Join Date: Aug 2017
Location: Bay Area, CA

iTrader: (2)

Quote:
Originally Posted by slcook54 View Post
Hagerty / RLI for me was always $278 at Laguna, then recently increased to $324. $60k, no mods. I think I put 10% deductible.

I've heard a lot of people prefer open track and you can stack cars on a single policy.
Quote:
Originally Posted by spooni View Post
Yeah I'm reading more of the fine print now and see that. Doing a Laguna day this weekend and RLI is $400

But I would need to do at least like 8-10 events in the next year to get my money's worth out of open track.

RLI underwrites for Lockton and Hagerty. Might as well go directly to them.


I want to mention that they distinguish mods and the mods have more weight to raise the daily rate.

For example, my E90: $50k M3 was $285, where $35k M3 + $15k mods to $50k total was $448.


This is listed during the quote:
Quote:
Modifications
Coverage for after market modifications are NOT covered unless specifically listed here
__________________
IG:ruhrohz_m3
Journal:Link
Track Chat Discord: https://discord.gg/VsKbTyqBVj
SF Bay Area: DM For coding services
Appreciate 0
      07-27-2022, 08:41 PM   #21784
M eyedoc
Private First Class
United_States
110
Rep
123
Posts

Drives: e30 M3, f10 M5
Join Date: Apr 2017
Location: Lost

iTrader: (0)

Quote:
Originally Posted by Redd View Post
Unplug your IBS (small blue connector at your battery negative cable) and see if the problem goes away. If it does you need to replace the negative cable because the IBS is attached to it.

Another possible culprit is the big red power cable behind the main fuse box inside your glove box. Look for discoloration on the shielding of the cable, especially at the fuse box end. We've been seeing this happen more frequently as the car ages.
Thank you Redd. Unfortunately disconnecting IBS and even the large black connector didn't change anything. Voltage runs between 12.4 and 12.9V and fluctuates only slightly with revs. As it is now dark in my area, will have to wait to check into the other power cable you mentioned. I Really hate electronics!
Appreciate 0
      07-27-2022, 10:46 PM   #21785
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Quote:
Originally Posted by M eyedoc View Post
Quote:
Originally Posted by Redd View Post
Unplug your IBS (small blue connector at your battery negative cable) and see if the problem goes away. If it does you need to replace the negative cable because the IBS is attached to it.

Another possible culprit is the big red power cable behind the main fuse box inside your glove box. Look for discoloration on the shielding of the cable, especially at the fuse box end. We've been seeing this happen more frequently as the car ages.
Thank you Redd. Unfortunately disconnecting IBS and even the large black connector didn't change anything. Voltage runs between 12.4 and 12.9V and fluctuates only slightly with revs. As it is now dark in my area, will have to wait to check into the other power cable you mentioned. I Really hate electronics!
I thibk that cable was a recall item?
Appreciate 0
      07-27-2022, 10:50 PM   #21786
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Got em finally. Time to take the BC off lol
Attached Images
  
Appreciate 6
roastbeef11405.00
911r812.50
///Mobbin1462.50
DrFerry5994.00
derbo3417.00
      07-27-2022, 11:06 PM   #21787
roastbeef
Lieutenant General
roastbeef's Avatar
United_States
11405
Rep
12,626
Posts

Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

iTrader: (4)

Quote:
Originally Posted by m3number86 View Post
Got em finally. Time to take the BC off lol
Are you coming out of retirement?
__________________
Instagram; @roastbeefmike
Appreciate 3
911r812.50
DrFerry5994.00
      07-28-2022, 12:12 AM   #21788
omgzirra_exe
Major
omgzirra_exe's Avatar
United_States
1159
Rep
1,346
Posts

Drives: 4.4L M3, IS300
Join Date: Jun 2019
Location: Long Beach, CA

iTrader: (0)

Quote:
Originally Posted by m3number86 View Post
Got em finally. Time to take the BC off lol
now we can swap cars for 30 minutes
__________________
Build: ZillaSpec M3 N1 Build
M3Post Track General Discussion: Discord
#fakeGTS
Appreciate 0
      07-28-2022, 12:20 PM   #21789
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Quote:
Originally Posted by omgzirra_exe View Post
Quote:
Originally Posted by m3number86 View Post
Got em finally. Time to take the BC off lol
now we can swap cars for 30 minutes
Lol
Appreciate 0
      07-28-2022, 12:21 PM   #21790
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Quote:
Originally Posted by omgzirra_exe View Post
Quote:
Originally Posted by m3number86 View Post
Got em finally. Time to take the BC off lol
now we can swap cars for 30 minutes
Not quite yet since number 2 is only 2. Older one wants to go to a track soon though so maybe!
Appreciate 0
      07-28-2022, 12:46 PM   #21791
omgzirra_exe
Major
omgzirra_exe's Avatar
United_States
1159
Rep
1,346
Posts

Drives: 4.4L M3, IS300
Join Date: Jun 2019
Location: Long Beach, CA

iTrader: (0)

Quote:
Originally Posted by m3number86 View Post
Not quite yet since number 2 is only 2. Older one wants to go to a track soon though so maybe!
soooo many babies :3
__________________
Build: ZillaSpec M3 N1 Build
M3Post Track General Discussion: Discord
#fakeGTS
Appreciate 0
      07-28-2022, 01:28 PM   #21792
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Quote:
Originally Posted by omgzirra_exe View Post
Quote:
Originally Posted by m3number86 View Post
Not quite yet since number 2 is only 2. Older one wants to go to a track soon though so maybe!
soooo many babies :3
My woman wants a third. No thanks!
Appreciate 1
      07-28-2022, 01:47 PM   #21793
Ximian
.
Ximian's Avatar
United_States
1758
Rep
1,762
Posts

Drives: E92 M3
Join Date: Oct 2016
Location: MN

iTrader: (1)

Garage List
2011 BMW M3  [0.00]
2021 BMW M3  [0.00]
Quote:
Originally Posted by m3number86 View Post
I thibk that cable was a recall item?
Behind the fuse box was definitely a recall in the US
__________________
Appreciate 1
      07-28-2022, 03:42 PM   #21794
slcook54
Captain
slcook54's Avatar
1847
Rep
893
Posts

Drives: 2012 MR M3 / 2018 SMB M3 CS
Join Date: Aug 2014
Location: San Francisco

iTrader: (0)

@SAMM3Y hooked it up.
Attached Images
 
__________________
Instagram: slcook54
Appreciate 4
DrFerry5994.00
tsk941469.50
SAMM3Y3073.00
      07-28-2022, 05:54 PM   #21795
Bimmer Barney
Major
Bimmer Barney's Avatar
1074
Rep
1,403
Posts

Drives: 2011.5 E90M ZCP
Join Date: Jan 2011
Location: California

iTrader: (4)

Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
__________________
2011.5 E90 M3 DCT ZCP Slicktop
Appreciate 1
slcook541846.50
      07-28-2022, 06:32 PM   #21796
admranger
Retired Curmudgeon
admranger's Avatar
United_States
2852
Rep
3,967
Posts

Drives: 19 X3M40i, 18 m550i
Join Date: May 2011
Location: Las Vegas, NV

iTrader: (1)

Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
I like big pipes and I can not lie. Other drivers I'll pass by.
__________________

'19 X3 M40 Carbon Black/Oyster, '18 M550i Mediterranean Blue/Ivory, Past BMWs: 2018 330 GT, 2016 X5 40e, 2011 E90M3, 2006 X5 4.4, 2003 330i ZHP, 2002 M3, 1997 Z3 2.8, 1995 M3 (2x), 1994 530i (manual), 1992 525i (manual), 1988 M3, 1987 325iS
Appreciate 2
slcook541846.50
derbo3417.00
      07-28-2022, 06:50 PM   #21797
slcook54
Captain
slcook54's Avatar
1847
Rep
893
Posts

Drives: 2012 MR M3 / 2018 SMB M3 CS
Join Date: Aug 2014
Location: San Francisco

iTrader: (0)

Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
__________________
Instagram: slcook54
Appreciate 2
      07-28-2022, 07:31 PM   #21798
DRLane
Brigadier General
DRLane's Avatar
United_States
3669
Rep
3,187
Posts

Drives: E92 M3
Join Date: Oct 2018
Location: Colorado

iTrader: (21)

Garage List
2008 m3  [6.17]
Quote:
Originally Posted by slcook54 View Post
Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
So around 3270 dry? What else have you done by way of weight reduction.
__________________
Not a Doctor, those are just my initials.
Appreciate 0
      07-28-2022, 07:52 PM   #21799
SAMM3Y
Colonel
SAMM3Y's Avatar
3073
Rep
2,747
Posts

Drives: 2008 m3
Join Date: Feb 2018
Location: NorCal

iTrader: (2)

Quote:
Originally Posted by slcook54 View Post
Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
Nice new evo for your beautiful car!
__________________
9ers
Appreciate 2
slcook541846.50
DrFerry5994.00
      07-28-2022, 08:12 PM   #21800
m3number86
Second Lieutenant
242
Rep
239
Posts

Drives: slow m3
Join Date: Jun 2013
Location: lost in angeles

iTrader: (0)

Quote:
Originally Posted by slcook54 View Post
Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
Do you start the day with a full tank?
Appreciate 1
slcook541846.50
      07-28-2022, 08:15 PM   #21801
slcook54
Captain
slcook54's Avatar
1847
Rep
893
Posts

Drives: 2012 MR M3 / 2018 SMB M3 CS
Join Date: Aug 2014
Location: San Francisco

iTrader: (0)

Quote:
Originally Posted by DRLane View Post
Quote:
Originally Posted by slcook54 View Post
Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
So around 3270 dry? What else have you done by way of weight reduction.
Ya. That seems right.

I'm DCT, manual / cloth seats, single hump.

With the AP 9660/9449 kit, E88s and AG 60AH battery and full tank, the car weighed 3,514.

Rough math was

- 50 for Akra
- 150 for front seats / rear seats / sound deadening and some of the other ancillary items in the trunk
+ 50 for 1/2 cage

= 3,364 - 14 gallons at 6 lbs (84) = 3,280.

After that there are no more obvious, non-comprising weight reduction options out there that I'm aware of. I'm still open to some of the below, but all of them have specific comfort or $/benefit trade offs.

AC, 50lbs?
Carbon hood, 10lbs?
Trunk, 10lbs?
Carbon doors (I drive to the track so doubt I'll go full cage)
Carbon door cards, 20lbs
Speakers
__________________
Instagram: slcook54
Appreciate 1
DrFerry5994.00
      07-28-2022, 08:20 PM   #21802
slcook54
Captain
slcook54's Avatar
1847
Rep
893
Posts

Drives: 2012 MR M3 / 2018 SMB M3 CS
Join Date: Aug 2014
Location: San Francisco

iTrader: (0)

Quote:
Originally Posted by m3number86 View Post
Quote:
Originally Posted by slcook54 View Post
Quote:
Originally Posted by Bimmer Barney View Post
Quote:
Originally Posted by slcook54 View Post
@SAMM3Y hooked it up.
Passes Laguna? Gorgeous pieces.
Ya, Evo passes. It's part of the reason I wanted Akra since Laguna is my home track. The 50lbs in weight loss doesn't hurt either.

Will upgrade to stage 2 from BPM.

Once the profi XL's are in, rear seats are pulled and the 1/2 cage is installed, I'm estimating around 3,350 on a full tank.
Do you start the day with a full tank?
I do. It's my process. Get there, fill up 3 gallons 101, rest 91. That gets me 3 sessions, if 20 minutes. Fill up again after 3rd session.
__________________
Instagram: slcook54
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 04:32 PM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, 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