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baconNgritz baconNgritz is offline
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Default Map 5 target boost too high? - 09-17-2020, 10:07 AM

While datalogging trying to pinpoint a throttle oscillation issue, I happened to notice my boost target was 19.5psi and I was peaking just over 20psi.

Read through the " E Series N54 JB4" sticky, it stated that peak boost should be 17psi on map 5. Hoping I can get some guidance on why this is happening, and if I should move to a different map.

Running 93 octane, VRSF chargepipe & DP's, BMS DCI, HKS SSQV bov, and Circuit Werks exhaust.

Thanks in advance.
Attached Files
File Type: csv 335_3rdGearWOT_091720.csv (17.5 KB, 11 views)
File Type: csv 335_driveWOT_091720.csv (15.4 KB, 14 views)
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Dave @ BMS/Fuel-It!'s Avatar
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Default 09-17-2020, 06:33 PM

Flash?

Can I see map 1


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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baconNgritz baconNgritz is offline
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Default 09-18-2020, 07:40 AM

The previous owner didn’t mention a flash, nor did the car come with the equipment to do so. I’ll try and grab some Map 1 pulls today.
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baconNgritz baconNgritz is offline
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Default 09-18-2020, 10:19 AM

Got out and did a few more pulls in drive and 3rd. On the second run in drive, it pushed me in to Map 4 for overboost I believe. Here's the logs.
Attached Files
File Type: csv 335_driveWOT_Map1_091820.csv (15.9 KB, 12 views)
File Type: csv 335_driveWOT_Map1_2ndRun_091820.csv (14.6 KB, 12 views)
File Type: csv 335_driveWOT_Map1_3rdRun_091820.csv (17.7 KB, 12 views)
File Type: csv 335_3rdGearWOT_Map1_091820.csv (18.8 KB, 10 views)
File Type: csv 335_3rdGearWOT_Map1_2ndrun_091820.csv (21.4 KB, 10 views)
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Default 09-18-2020, 11:02 AM

Quote:
Originally Posted by baconNgritz
Got out and did a few more pulls in drive and 3rd. On the second run in drive, it pushed me in to Map 4 for overboost I believe. Here's the logs.
Your hpfp drops in some of those logs and your lpfp drops into the 40’s and 50’s. I would definitely address those especially if that’s on 93 fuel.


08 E90 335i - MONTEGO BLUE - JB4/MHD E85 BEF
BMS DCI - BMS OCC - NRW CARBON COWL FILTERS
MMP CHARGEPIPE - TIAL BOV - VRSF 7.5Ē RACE FMIC
VRSF DPís - VRSF INLETS - VRSF OUTLETS
BMS PEDAL TUNER - RB PCV VALVE - 3.5 BAR TMAP
NGK 97506 @.022 - PFS STAGE 2 LPFP - H&R SPRINGS
SPOOL PERFORMANCE ETHANOL ANALYZER
MISHIMOTO 25 ROW OIL COOLER
BMS SPORT OIL COOLER VALVE - NRW V1 PADDLES
19Ē 666m WHEELS - HANKOOK VENTUS V12 EVO 2ís
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baconNgritz baconNgritz is offline
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Default 09-18-2020, 12:20 PM

Quote:
Originally Posted by Rule77
Your hpfp drops in some of those logs and your lpfp drops into the 40ís and 50ís. I would definitely address those especially if thatís on 93 fuel.
I noticed that, luckily it seems that the AFR's and trims are still acceptable. I have gotten the fuel pump probability codes in the past, wonder if the LPFP dropping down is what's causing the HPFP to drop pressure? I'd really hate to have to do both.

Although, the fuel pressures still don't answer the boost target issue.
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baconNgritz baconNgritz is offline
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Default 09-21-2020, 11:05 AM

Is there a way to check for backend flash without having the MHD or other module?
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Default 09-22-2020, 01:42 PM

Quote:
Originally Posted by baconNgritz
Is there a way to check for backend flash without having the MHD or other module?
Not really. Best way is to read what is currently flashed on the car


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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baconNgritz baconNgritz is offline
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Default 09-22-2020, 01:55 PM

Quote:
Originally Posted by Dave @ BMS/Fuel-It!
Not really. Best way is to read what is currently flashed on the car
Would the current boost targets lead you to believe its been flashed? Or is there another possible cause?
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baconNgritz baconNgritz is offline
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Default 09-29-2020, 06:07 AM

Which product would you guys suggest as a start for checking for a flash?
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