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Default NLS - AFR lean, regular shifting - fine - 06-14-2019, 08:39 AM

Hello, as the title states my car (E92 335XI Manual) when using NLS running E85 (E40-E60) the switch between gears (at random/any) causes AFR to lean out at WOT and switch to Map 4. Attached is one log. Its happened a couple of other times, however didn't have my phone to log at the time.

Mods:
VRSF 5inch Intercooler
VRSF Intake Relocation
VRSF Down pipe
Fuel it LPFP
JB4-Map 7 - Anti-Lag Chip & 2Step Relay
E85 Backend Flash - 020719 - JB4_IJE0S_E85 file
JB4 Firmware 32_12 but now updated to 32_14
Spec Stage 3+ Clutch
10k miles on new coils and plugs

If anyone could help pointing me in the right direction I would greatly appreciate it. Thanks.
Attached Files
File Type: csv 2019-04-14 19_45_35_Map-7_AFR LEAN.csv (18.2 KB, 17 views)
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Car: E92 335XI
Default 06-15-2019, 11:11 AM

Quote:
Originally Posted by turbo16lbs
Hello, as the title states my car (E92 335XI Manual) when using NLS running E85 (E40-E60) the switch between gears (at random/any) causes AFR to lean out at WOT and switch to Map 4. Attached is one log. Its happened a couple of other times, however didn't have my phone to log at the time.

Mods:
VRSF 5inch Intercooler
VRSF Intake Relocation
VRSF Down pipe
Fuel it LPFP
JB4-Map 7 - Anti-Lag Chip & 2Step Relay
E85 Backend Flash - 020719 - JB4_IJE0S_E85 file
JB4 Firmware 32_12 but now updated to 32_14
Spec Stage 3+ Clutch
10k miles on new coils and plugs

If anyone could help pointing me in the right direction I would greatly appreciate it. Thanks.
Looks like you go into open loop / switch to map 4

Does it only happen when running the mentioned blends?



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

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Default 06-16-2019, 07:28 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Looks like you go into open loop / switch to map 4

Does it only happen when running the mentioned blends?
Itís the only thing Iíve ever ran. Granted the revision changes on the JB4 firmware and the BEFs have been applied over time, but during shifts causing a lean AFR never happened before NLS or the Antilag chip. Not saying thatís the cause but probably something that occurs just between shifting the gears with the pedal at wot.

Doesnít happen when shifting normal while driving spiritedly.
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turbo16lbs turbo16lbs is offline
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Default 07-01-2019, 11:23 AM

Anyone kindly with any possible other inputs?
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Car: E92 335XI
Default 07-01-2019, 10:23 PM

Quote:
Originally Posted by turbo16lbs
Itís the only thing Iíve ever ran. Granted the revision changes on the JB4 firmware and the BEFs have been applied over time, but during shifts causing a lean AFR never happened before NLS or the Antilag chip. Not saying thatís the cause but probably something that occurs just between shifting the gears with the pedal at wot.

Doesnít happen when shifting normal while driving spiritedly.
Hmmm odd- have you tried with old firmware?



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

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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turbo16lbs turbo16lbs is offline
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Default 07-02-2019, 04:58 AM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Hmmm odd- have you tried with old firmware?
I haven't. Only because the latest firmware combines the Anti-Lag and 2Step (while rolling) with the WMI option selected on - its too much fun. I'll give it a shot though.
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rickz96 rickz96 is offline
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Car: e60 535Xi
Default 07-03-2019, 04:16 AM

Quote:
Originally Posted by turbo16lbs
Anyone kindly with any possible other inputs?
I have had this happen, can't find the specific logs in my sea of logs, but yes. I have attached a log from when I was at the drag strip the other night showing the same lean condition during NLS, however mine is no longer going into map 4.

I still believe something is going on with NLS/2step and AFR, just having a hard time putting my finger on it. I have ordered Fuel-it ethanol sensor to integrate with JB4, hoping it will be able to control the AFR better. I am trying to eliminate variables.
Attached Files
File Type: csv 190621_1927.csv (17.8 KB, 4 views)
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