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18bmwb58 18bmwb58 is offline
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Exclamation B58 running lean - 05-16-2018, 10:58 AM

Hey guys im new to this platform and i wanned to get some opinnions on AFR i realized these cars run lean but whats too lean ? I got bolt ons jb4 and at 17 psi 3rd wot im at around 14-15 afr
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Payam @ BMS's Avatar
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Default 05-16-2018, 03:03 PM

Quote:
Originally Posted by 18bmwb58
Hey guys im new to this platform and i wanned to get some opinnions on AFR i realized these cars run lean but whats too lean ? I got bolt ons jb4 and at 17 psi 3rd wot im at around 14-15 afr
If you can post a log we can further make sure all is running the way it is supposed to. To answer you question though yes, they do like to run lean around 14-15 AFR mid range and come down to 13-14 redline.


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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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18bmwb58 18bmwb58 is offline
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Default 05-16-2018, 04:00 PM

I have the wireless bluetooth it only lets me email logs.. do you have an email i can email the logs to?
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335xiRT1 335xiRT1 is offline
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Default 05-16-2018, 04:38 PM

Only thing I hate about the app.
You can’t upload and post logs through it.
What map are you running.


2017 340i JB4/ BB TBi/ intake
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18bmwb58 18bmwb58 is offline
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Default 05-16-2018, 04:47 PM

Map 5 and map 3 ill try to enail it to my self maybe it will let me post it ... i just got the ewg harrness to fix my tb closure where can i find the flex fuel wires ? I looked around but cant find anything on the site
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335xiRT1 335xiRT1 is offline
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Default 05-16-2018, 05:14 PM

You have to run map 6 and absolute values for EWg to work and help throttle closures
Try flat 15psi first and see how it looks.
fUA at 10 to start, if still throttle closures increase FUA slightly


2017 340i JB4/ BB TBi/ intake
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Default 05-16-2018, 05:15 PM

I like to stay under 14 AFR but that’s just me.


2017 340i JB4/ BB TBi/ intake
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18bmwb58 18bmwb58 is offline
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Default 05-17-2018, 03:38 PM

Ok guys did more logging 3rd and 4th map3 3k rpm 4th gear afr starts at 15 and slowly goes down to 13 as rpm rises
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Wickedowesix Wickedowesix is offline
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Default 05-17-2018, 08:08 PM

The logs are saved on your phone under the jb4 folder. Go in there and attach the .csv to this thread.
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18bmwb58 18bmwb58 is offline
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Talking 05-18-2018, 04:26 AM

Got it
Attached Files
File Type: csv 2018-05-14 20_05_19.csv (41.5 KB, 19 views)
File Type: csv 2018-05-14 20_28_44.csv (11.1 KB, 14 views)
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Default 05-18-2018, 09:04 AM

Quote:
Originally Posted by 18bmwb58
Got it
Log is okay but not long enough to fully evaluate. Get a log in 3rd gear from 2k rpm - redline. Make sure pedal is at 100% or else the logs won't be accurate.
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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.
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18bmwb58 18bmwb58 is offline
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Default 05-28-2018, 01:50 PM

Got ewg wires and ff wires installed put in 2 gallons of e85 map6 here is the log let me know what you think
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File Type: csv 3rd gear e85 2 gallons se ond log.csv (8.1 KB, 31 views)
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