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Ryan81789 Ryan81789 is offline
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Default Jb4 help - 04-09-2019, 01:51 PM

Can anyone take a look at my logs and tell me how to use the jb4 better for tuning? Where do I find the latest firmware to update my jb4?

2009 bmw 335i xdrive. Jb4, dual cone intake, sport intercooler, down *****, all cats are removed, stage 3 fuel it LPFP, VTT GC hybrid twin turbo kit
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File Type: csv 2018-01-04 20_11_26.csv (10.4 KB, 18 views)
File Type: csv 2018-01-04 20_31_05.csv (10.8 KB, 15 views)
File Type: csv 2018-01-04 20_32_16.csv (10.9 KB, 15 views)
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Default 04-09-2019, 10:49 PM

N54 BimmerBoost MHD Back End Flash Maps - N54Tech.com - International Turbo Racing Discussion

Post #1

Let’s get your JB4 firmware updated & you’ll want to flash the right hybrid BEF



http://www.fuel-it.biz/

e92 AT 335xi 2.0
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Haynpunch Haynpunch is offline
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Default 04-09-2019, 11:41 PM

Latest JB4 Firmware
Update to latest JB4 Firmware

Flash the appropriate BEF for your mods as noted above (link in previous post)

Set all settings to default found in post #1
Hybrid Turbo Setup Directions


07 E90 AT - xHP
JB4 G5 - Trebila BEF
FBO
Hybrids
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Default Updated firmware - 04-10-2019, 03:29 AM

I updated firmware last night. Here is a new log from after I updated. What flash do I need to get?
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File Type: csv 2019-04-09 22_45_57_Map-5.csv (8.4 KB, 16 views)
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Talking 04-10-2019, 07:13 AM

Quote:
Originally Posted by Ryan81789
I updated firmware last night. Here is a new log from after I updated. What flash do I need to get?
Choose one from the link Dave provided.....if you are running just pump gas start with that. Make sure you flash the appropriate one (when you connect to mhd it’ll tell you which dme you have) most likely IJE0S but double check!!!

Set ALL settings to default in the link I provided in the post earlier!

Read that whole post

Start with map 2
Post a proper log
3rd gear 2k - 7k wot traction off
Post it - wait for feed back


07 E90 AT - xHP
JB4 G5 - Trebila BEF
FBO
Hybrids
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Default 04-10-2019, 09:42 PM

Quote:
Originally Posted by Ryan81789
I updated firmware last night. Here is a new log from after I updated. What flash do I need to get?
Choose the appropriate flash for your fuel & mods.

If you don’t have hybrid turbos or a single- ignore anything with “ST” or “hybrid” in it.

I’d assume your stock turbo- so pump flash if using 93 to e30ish



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Default 06-12-2019, 07:35 PM

I recently had the mhd e85 hybrid turbo bef put on my car. Took a log tonight from 2k-7k rpm if anyone can look at it. Any help is appreciated
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Default 06-12-2019, 09:30 PM

You still haven’t set all to default from post 3 in this thread


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Default 06-13-2019, 10:46 AM

Quote:
Originally Posted by Ryan81789
I recently had the mhd e85 hybrid turbo bef put on my car. Took a log tonight from 2k-7k rpm if anyone can look at it. Any help is appreciated
What are you using for fuel? HPFP looks to be getting a bit low / taxed.

I think your LPFP sensor is shot- that value stays pegged @ 48- I'd look into replacing.



http://www.fuel-it.biz/

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Default 06-13-2019, 09:15 PM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
What are you using for fuel? HPFP looks to be getting a bit low / taxed.

I think your LPFP sensor is shot- that value stays pegged @ 48- I'd look into replacing.
I run e85/93 mix, about an e45 mixture. I took another log tonight with the default hybrid turbo settings.
Attached Files
File Type: csv 2019-06-14 00_09_01_Map-2.csv (34.1 KB, 12 views)


2009 bmw 335ix, jb4, dual cone intake, down pipe, sport intercooler, stage 3 lpfp, vtt gc hybrid twin turbo kit, mhd e85 hybrid turbo bef
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Default 06-15-2019, 12:24 AM

I changed the lpfp sensor today. Took another log tonight with the new sensor. The car changed the map to map 4 on me, saying fuel trim variance. Any ideas what it could be?
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File Type: csv 2019-06-15 03_08_41_Map-2.csv (12.4 KB, 14 views)


2009 bmw 335ix, jb4, dual cone intake, down pipe, sport intercooler, stage 3 lpfp, vtt gc hybrid twin turbo kit, mhd e85 hybrid turbo bef
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Default 06-15-2019, 11:01 AM

Quote:
Originally Posted by Ryan81789
I changed the lpfp sensor today. Took another log tonight with the new sensor. The car changed the map to map 4 on me, saying fuel trim variance. Any ideas what it could be?
Your HPFP looks maxed

LPFP dipping into the 50s

You’ll throw the variance code when your bank 1 / 2 trims start to drift too far apart.

Can I see a log on a lower map?



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