E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cobb flash now car wont start



Reply
 
Thread Tools Search this Thread
      12-24-2014, 12:25 PM   #1
nckwrnr
New Member
0
Rep
29
Posts

Drives: 07 335i
Join Date: Dec 2014
Location: Kirkland, WA

iTrader: (0)

Cobb flash now car wont start

I uploaded a standard Cobb stage 1 flash on my car during the upload it went dead half way through and went into recovery mode. So I went out and got a battery tender and charged the car overnight still dead as a doornail in the morning dome light wont even turn on. I then tried jumping it and the car cranks just fine but wont start. I connected the cobb with the car on the jumpers and it finished uploading the tune and no codes are present. Its been on the jumper cables with the other car running for over an hour and it still just cranks but wont start.

Prior to this the car has had no low battery warnings or issues with the battery going dead. Tried calling Cobb they are close until January 1st. Any ideas would be greatly appreciated!
Appreciate 0
      12-24-2014, 12:32 PM   #2
BuraQ
BimmerPost Supporting Vendor
BuraQ's Avatar
United_States
105
Rep
3,511
Posts


Drives: 11" E92 335is / 12" E89 Z4
Join Date: Nov 2010
Location: Florida

iTrader: (0)

Garage List
Uninstall the COBB AP from your car, and make sure it can start. If all is good reinstall the AP again just make to have external power connected. Somewhere in their user manual it addresses this which seems to be related to older n54 cars

Last edited by BuraQ; 12-24-2014 at 12:37 PM.
Appreciate 0
      12-24-2014, 12:43 PM   #3
nckwrnr
New Member
0
Rep
29
Posts

Drives: 07 335i
Join Date: Dec 2014
Location: Kirkland, WA

iTrader: (0)

Thanks uninstalling it now to see if it will start. That would make sense my car is about as old as it gets with a 9/06 build date.

Update:

It worked! Uninstalled it and started right up thanks BuraQ your a lifesaver. I will make sure and have the other car jumpers hooked up this time during the flash.
Appreciate 0
      12-24-2014, 01:15 PM   #4
4doorbmwpower
Captain
4doorbmwpower's Avatar
United_States
20
Rep
964
Posts

Drives: Montego Blue E90 335i
Join Date: Nov 2010
Location: North Carolina

iTrader: (3)

Send a message via Skype™ to 4doorbmwpower
im an 09/06 and i installed no problem. I keep my car on a BMW smart charger and it was on during my install. no problems at all.
__________________
Coming Soon, Custom/DO METH KIT w/dual DO10's, AR 3in DPs, HPF Gen2 Catback, RUF281 19s, Stoptech drilled/slotted rotors, M3 rep front bumper. Custom Headlights w/ Plasma Angel Eyes, Custom OC, UUC Tranny Mounts, 08' Tranny swap, Alpina flash Level 10 Valvebody and Torque converter.
Appreciate 0
      12-24-2014, 02:18 PM   #5
924er
Major
85
Rep
1,337
Posts

Drives: e92 335i '10
Join Date: Feb 2014
Location: Socal

iTrader: (0)

Damn this scares me cuz I always flash my car and never want that battery to die. What kind of battery charger are u using?

And yeah if the flash gets corrupted then the car will crank and not start lol
__________________
'10 e92 N54

DCI intakes, ER chargepipe, TIAL BOV,
VRSF 5in FMIC, BMS Downpipes COBB e30
Appreciate 0
      12-24-2014, 04:08 PM   #6
NA55
Private First Class
2
Rep
147
Posts

Drives: 335i
Join Date: Oct 2013
Location: LA

iTrader: (0)

Quote:
Originally Posted by 924er View Post
Damn this scares me cuz I always flash my car and never want that battery to die. What kind of battery charger are u using?

And yeah if the flash gets corrupted then the car will crank and not start lol
I've accidentally removed key while changing maps. The cobb ap does a good job of recovering flash and allows you to restart the process without issues.
Appreciate 0
      12-24-2014, 05:46 PM   #7
nckwrnr
New Member
0
Rep
29
Posts

Drives: 07 335i
Join Date: Dec 2014
Location: Kirkland, WA

iTrader: (0)

Had the car hooked up to the jumpers with the other car running this time during the flash worked great. Good alternative if you don't have at least a 10 amp charger.

Car is night and day difference so much quicker even on the stage 1 sport map only have 92 octane here. Going to add 2 gallons of e85 before my next fillip and use the aggressive map which should net 94 octane.
Appreciate 0
      12-24-2014, 07:24 PM   #8
924er
Major
85
Rep
1,337
Posts

Drives: e92 335i '10
Join Date: Feb 2014
Location: Socal

iTrader: (0)

Quote:
Originally Posted by nckwrnr
Had the car hooked up to the jumpers with the other car running this time during the flash worked great. Good alternative if you don't have at least a 10 amp charger.

Car is night and day difference so much quicker even on the stage 1 sport map only have 92 octane here. Going to add 2 gallons of e85 before my next fillip and use the aggressive map which should net 94 octane.
The e85 will put a smile on your face. I had tried 2.2 gallons of e85 and the rest 91 octane used stage 1 aggressive and wow. Also had 0 timing corrections.

If you are full bolt on I recommend trying the Cobb e30 maps
__________________
'10 e92 N54

DCI intakes, ER chargepipe, TIAL BOV,
VRSF 5in FMIC, BMS Downpipes COBB e30
Appreciate 0
      12-24-2014, 08:55 PM   #9
NA55
Private First Class
2
Rep
147
Posts

Drives: 335i
Join Date: Oct 2013
Location: LA

iTrader: (0)

Glad you got everything sorted out.
The e30 map will make the other OTS maps feel weak.. Ethanol FTW!!
Appreciate 0
      12-25-2014, 09:07 AM   #10
ImGone92
Private
0
Rep
56
Posts

Drives: N54 335i
Join Date: Aug 2014
Location: Coral Springs

iTrader: (0)

I am running cobb stage2+ aggressive, fbo stock exhaust for now, I ran 2 gallons of e85 on a half tank, car pulled pretty good ...day after my car shut off on me and threw a code for fuel pressure plausibility. I cleared the code twice and juss bearly made it home. my question is, with cobb how do u get maps to run e85? Or do I need you to tune it on e85 BQ?
Appreciate 0
      12-25-2014, 03:52 PM   #11
924er
Major
85
Rep
1,337
Posts

Drives: e92 335i '10
Join Date: Feb 2014
Location: Socal

iTrader: (0)

Quote:
Originally Posted by ImGone92
I am running cobb stage2+ aggressive, fbo stock exhaust for now, I ran 2 gallons of e85 on a half tank, car pulled pretty good ...day after my car shut off on me and threw a code for fuel pressure plausibility. I cleared the code twice and juss bearly made it home. my question is, with cobb how do u get maps to run e85? Or do I need you to tune it on e85 BQ?
2 gallons on half a tank in like 40% e85 I think but idk why u car would still trip out. This is what scares me about e85. When using it on non e85 map like ur doing its only to correct any timing drops and that's it. Don't use e85 on a map not made for it. Go on the Cobb website and download the e30 maps. Hopefully someone can chime on that problem u are having
__________________
'10 e92 N54

DCI intakes, ER chargepipe, TIAL BOV,
VRSF 5in FMIC, BMS Downpipes COBB e30
Appreciate 0
      12-25-2014, 05:50 PM   #12
BuraQ
BimmerPost Supporting Vendor
BuraQ's Avatar
United_States
105
Rep
3,511
Posts


Drives: 11" E92 335is / 12" E89 Z4
Join Date: Nov 2010
Location: Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by ImGone92
II am running cobb stage2+ aggressive, fbo stock exhaust for now, I ran 2 gallons of e85 on a half tank, car pulled pretty good ...day after my car shut off on me and threw a code for fuel pressure plausibility. I cleared the code twice and juss bearly made it home. my question is, with cobb how do u get maps to run e85? Or do I need you to tune it on e85 BQ?

If your fueling is not tuned for the % amount of added E85 yes it will throw a code and you will get a CEL

You were runing the wrong map for the fuel you added. 2 gals of E85 to a half tank is almost E30. In Florida expecially Shell E85 has been tested to be E90.

Your fuel trims were more likely maxing out that threw a code followed by a CEL

Edit: Here is a site to tell you how much E85 your mixing http://e85prices.com/milesperdollar.htm (last table on this site) . You can added up to E20 on the COBB OTS anything more than that will aventually max out your fueling trims and throw a CEL
__________________
BQ Tuning by WedgePerformance
MHD & COBB ATR Custom Tuning

Last edited by BuraQ; 12-25-2014 at 06:13 PM.
Appreciate 0
      12-25-2014, 10:44 PM   #13
nckwrnr
New Member
0
Rep
29
Posts

Drives: 07 335i
Join Date: Dec 2014
Location: Kirkland, WA

iTrader: (0)

Would there be worthwhile gains adding e20 on a stage 1 aggressive tune?

Also I wanted to get a wedge flash for a 92 tune and and e30 tune with just dci. Do you feel the e30 tune is a good idea with just the dci as the only other mod?
Appreciate 0
      12-26-2014, 07:59 PM   #14
924er
Major
85
Rep
1,337
Posts

Drives: e92 335i '10
Join Date: Feb 2014
Location: Socal

iTrader: (0)

Quote:
Originally Posted by nckwrnr
Would there be worthwhile gains adding e20 on a stage 1 aggressive tune?

Also I wanted to get a wedge flash for a 92 tune and and e30 tune with just dci. Do you feel the e30 tune is a good idea with just the dci as the only other mod?
It depends, are u getting any timing drops or are u one of those that don't data log?

E85 will correct most timing drops when adding it to an aggressive map. For me I only have access to 91 octane so I can't run aggressive maps. When I add e85 the car loves it and I get no timing corrections and my fueling looks good.

To really take advantage of e85 use the maps made for it. As for mods that all depends on what Cobb recommends for each map

Always log to check for fueling esp with e85.
__________________
'10 e92 N54

DCI intakes, ER chargepipe, TIAL BOV,
VRSF 5in FMIC, BMS Downpipes COBB e30
Appreciate 0
      12-26-2014, 09:01 PM   #15
BuraQ
BimmerPost Supporting Vendor
BuraQ's Avatar
United_States
105
Rep
3,511
Posts


Drives: 11" E92 335is / 12" E89 Z4
Join Date: Nov 2010
Location: Florida

iTrader: (0)

Garage List
Quote:
Originally Posted by nckwrnr View Post
Would there be worthwhile gains adding e20 on a stage 1 aggressive tune?

Also I wanted to get a wedge flash for a 92 tune and and e30 tune with just dci. Do you feel the e30 tune is a good idea with just the dci as the only other mod?
If your having problems with timing corrections even after custom tuning (doubtfully) then adding some E85 (up to E20) will straighten that out.

E30 not FBO is a waste, unless we bump timing up but keeping boost conservative.
__________________
BQ Tuning by WedgePerformance
MHD & COBB ATR Custom Tuning
Appreciate 0
      12-27-2014, 01:42 PM   #16
nckwrnr
New Member
0
Rep
29
Posts

Drives: 07 335i
Join Date: Dec 2014
Location: Kirkland, WA

iTrader: (0)

We only have 92 octane here so I used 2 gallons of e85 so I can run the stage 1 aggressive tune. Haven't done any logging yet on the car. Runs great and pulls hard with no misfires has fresh plugs.
Appreciate 0
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
Forum Jump


All times are GMT -4. The time now is 01:59 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
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