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vtn86 vtn86 is offline
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Car: 335i xDrive
Default Overboost Issue - 09-01-2018, 08:41 AM

Hi - Having some issues post JB4 install and BEF update. Cliff notes are as follows:

-JB4 (used) installed.
-Few issues right off the bat - bad settings/incorrect information laid out by previous owner, settings changed to default.
-ISO modification done - Initial Map 4 safety due to overboost (prior owner said it was done) after firmware update.
-Car seemed to run OK, but ran fairly lean around 3k rpm.
-Member on another forum mentioned a BEF would help as well as some additional octane. Given I didn't want to play with fuel mixtures until the baseline tune/BEF worked appropriately, I opted to do the BEF.
-BEF done, went for a test drive and hitting overboost safety again. I did set the JB4 to Menu4/Setting2

Latest log:
datazap (DOT) me/u/vtn86/log-1535690672?log=0&data=1-4

^modified the link above; appears I can't post links.

e90post forum post (couldn't figure out how to get a registration here until this week):
https://www.e90post.com/forums/showthread.php?t=1528091

Vehicle details:
335i xDrive
2011
N55
Bone stock besides charge pipe and JB4

Thanks in advance for any help that can be provided here.
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 09-01-2018, 08:55 AM

Attach actual CSV here if you need help. But, if you are the same person who emailed me lower FF to 70 as I said in email and relog.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

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.
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vtn86 vtn86 is offline
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Car: 335i xDrive
Default 09-01-2018, 12:09 PM

Terry, same person. Apologies for the multiple posts. Won’t do it again. Thanks!
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 09-01-2018, 12:56 PM

No worries.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

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.
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