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Junior Member
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Posts: 34
Join Date: Sep 2017
Car: 2013 335i e92 M Sport
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Log Check after DV+ Install -
10-10-2018, 08:42 AM
Hi Guys, I recently installed the GFB DV+ on my E92 N55 335i, and I'm having some issues with overboosting at low-ish RPMs. After doing some research this morning, I see that I'm not the only one who has had this issue after using the extra "sport" spring that comes with the kit, so I wanted to see if there were any settings I could adjust to tone this down that didn't involve taking it back apart.
I haven't been able to get to my normal E85 station, so this is straight 93 octane.
Mods:
BMS intake, VRSF 5" intercooler, charge pipe, turbo outlet pipe, ******* **, GFB DV+ with sport spring, JB4 + Pump BEF
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Super Moderator
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Posts: 6,344
Join Date: Oct 2013
Car: e90 335i
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10-10-2018, 10:20 AM
Set duty bias to 50 across the board an lower FF to 40 and get another log for me.
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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Junior Member
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Posts: 34
Join Date: Sep 2017
Car: 2013 335i e92 M Sport
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10-10-2018, 11:32 AM
Quote:
Originally Posted by Payam @ BMS
Set duty bias to 50 across the board an lower FF to 40 and get another log for me.
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Yes sir. New log attached. |
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Super Moderator
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Posts: 6,344
Join Date: Oct 2013
Car: e90 335i
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10-10-2018, 11:39 AM
From 4500 RPM and up raise duty bias +10.
Raise FF to 65 and get another log.
Looks much better no more boost spike, now I'm getting you closer to target boost through the rev range.
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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Junior Member
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Posts: 77
Join Date: Sep 2017
Car: 16 328
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10-10-2018, 03:43 PM
Quote:
Originally Posted by Payam @ BMS
From 4500 RPM and up raise duty bias +10.
Raise FF to 65 and get another log.
Looks much better no more boost spike, now I'm getting you closer to target boost through the rev range.
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what about changing default WG position ? wouldn't that help in this situation ? |
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Junior Member
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Posts: 34
Join Date: Sep 2017
Car: 2013 335i e92 M Sport
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10-11-2018, 07:15 AM
Quote:
Originally Posted by Payam @ BMS
From 4500 RPM and up raise duty bias +10.
Raise FF to 65 and get another log.
Looks much better no more boost spike, now I'm getting you closer to target boost through the rev range.
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Here's a quick log with the requested changes. It looks, and feels, a lot better. |
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