N54Tech.com - International Turbo Racing Discussion
(#1)
Old
Vitto330e Vitto330e is offline
New Member
 
Posts: 6
Join Date: Sep 2018
Car: Bmw 330e MSport
Exclamation Bmw 330e and JB4 issue - 09-02-2018, 04:31 AM

Hi, I am posting some logs of my car. Now also in map 1 car is fluctuating in a very strong way. Please take a look to the attached files. I tried to read codes but there isn't any error.
In stock mode everything is OK... And trying map 6 I see that the more boost I add and worse it goes... Seems like a problem of mass air measurement and throttle closure.
Thanks for your help
Reply With Quote
(#2)
Old
dRDiesel's Avatar
dRDiesel dRDiesel is offline
Junior Member
 
Posts: 253
Join Date: Apr 2018
Car: BMW
Default 09-02-2018, 05:56 PM

What you using minimum of 91 octane?


| 2018 BMW 340i | M-Sport | Track Handling Package |
| Pure Stage 1 | MPE + ER down-pipe | BMS Intake | JB4 + MHD | BMS Meth Kit |
Reply With Quote
(#3)
Old
Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
Tuner
 
Posts: 29,846
Join Date: Jan 2008
Default 09-02-2018, 06:51 PM

Map1 looks normal to me. How does map2 look?


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
Reply With Quote
(#4)
Old
Vitto330e Vitto330e is offline
New Member
 
Posts: 6
Join Date: Sep 2018
Car: Bmw 330e MSport
Default 09-04-2018, 11:01 AM

I am using a 100 Ron European fuel, similar to 93 AKI...map 2 improves the problem.
Could be a problem of cables or hardware? the car becomes undriveable as soon as "boost psi" becomes higher than "ecu psi", also at partial load.
It has the same effect of a broken ignition coil for example.
I am really depressed...Switching off JB4 everything goes ok. Please help me...

Last edited by Vitto330e; 09-04-2018 at 11:02 AM.. Reason: corrections in text
Reply With Quote
(#5)
Old
Vitto330e Vitto330e is offline
New Member
 
Posts: 6
Join Date: Sep 2018
Car: Bmw 330e MSport
Default 09-04-2018, 11:12 AM

Logging ECU i cannot see MAF values...so is it possible that JB4 doesn't handle this signal and car cannot be smooth?
Reply With Quote
(#6)
Old
Vitto330e Vitto330e is offline
New Member
 
Posts: 6
Join Date: Sep 2018
Car: Bmw 330e MSport
Default 09-06-2018, 03:28 AM

Good news. Problem solved. I tried a new firmware and an older one without any solution. So I stopped firmware upload at around 50%...so JB4 was without software I suppose. After that I reinstalled firmware from zero and everything is OK now! Probably software was corrupted and hardware wasn't able to do his job?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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




vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2019, N54tech.com