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Default Help with log - 05-14-2018, 07:06 PM

Hey guys I got the dreaded 29e2 and 29f2. By my understanding of logs I'm suspecting the LPFP let me know what you guys think
Forgot to mention, car is stock other then bms dci and jb4. Index 12 injectors and new plugs
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File Type: csv 2018-05-12 16_54_57.csv (17.7 KB, 24 views)

Last edited by domain007; 05-14-2018 at 07:12 PM..
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Default 05-14-2018, 07:10 PM

Quote:
Originally Posted by domain007
Hey guys I got the dreaded 29e2 and 29f2. By my understanding of logs I'm suspecting the LPFP let me know what you guys think
We would need a proper log- most logs aren't done in 6th gear.

Take a log in 3rd gear WOT 2k- redline traction off.

LPFP pressure in that log does hit the mid 40s- curious to see how 3rd looks



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Default 05-14-2018, 07:18 PM

No problem, I'll go take one right now haha ill re upload one soon
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Default 05-14-2018, 08:07 PM

Took another log, this time in map one and no stuttering but at a few points i can see the lpfp dip to around 50 psi during WOT lowest being 47(line 88).
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File Type: csv 2018-05-14 22_38_26.csv (40.6 KB, 8 views)
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Default 05-14-2018, 08:51 PM

What fuel are you using? Might need some better fuel. Also need to update your firmware on the JB4. Under user adjustments tab you will need to input value of 5 under 6 cylinder logging and hit save. LPFP is really oscillating, not sure why.
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Default 05-14-2018, 08:59 PM

First log that i uploaded i was using petro canada 94"better then pemuim" fuel haha. I know it has some ethanol in it to boost its octane. Second time around i was using Shell 91. Do LPFP oscillations mean its going bad? I will update JB4 in a few mins and set that user adjustment
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Default 05-14-2018, 09:02 PM

Quote:
Originally Posted by domain007
First log that i uploaded i was using petro canada 94"better then pemuim" fuel haha. I know it has some ethanol in it to boost its octane. Second time around i was using Shell 91. Do LPFP oscillations mean its going bad? I will update JB4 in a few mins and set that user adjustment
Not too sure to be honest, I don't recall ever seeing it that erratic. Maybe the sensor is just going bad? Lets evaluate after you update it all and log again.


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Default 05-14-2018, 10:00 PM

So i updated the JB4 firmware with the latest G5 ISO anddd .... even worse :/ now my car is hitting 16.3 psi of boost on map one ... boost is super erratic! here are some logs. I didnt want to go too crazy so i dont blow her up
Attached Files
File Type: csv 2018-05-15 00_40_28.csv (13.8 KB, 3 views)
File Type: csv 2018-05-15 00_40_52.csv (15.4 KB, 4 views)
File Type: csv 2018-05-15 00_43_52.csv (13.7 KB, 4 views)
File Type: csv 2018-05-15 00_47_54.csv (16.9 KB, 5 views)
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Default 05-14-2018, 11:41 PM

LPFP fluctuations can also be the HPFP solenoid oscillating as that is literally inches from the LPFP sensor.

Used JB4? What is menu 4 set to?



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Default 05-15-2018, 12:04 AM

Jb4 dash setting 4 is where it should be (setting 3) I'm wondering if a leaky diverter valve or a bad coil pack could be throwing off the engine and making it go into limp mode. However im not getting any misfire codes :/

Here is another log when this happened. Let me know if you guys see anything out of the ordinary
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File Type: csv 2018-05-15 01_42_36.csv (19.0 KB, 8 views)
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Default 05-15-2018, 09:38 AM

I don't see any reason why it should go into limp mode. The LPFP oscillation is fixed now, and everything else looks pretty good except timing. I would see if you can try better fuel?

When the car goes into limp mode, are there any codes?
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Default 05-15-2018, 10:21 AM

Yeah the limp mode codes are the 29e2 fuel injection rail pressure and 29f2 high pressure pump/ open loop set too high. Sometimes i also get *** less down ***** detected codes but that's once in 1k kms or so. Can a bad o2 sensor or bad coil packs cause this?
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Default 05-15-2018, 10:25 AM

Quote:
Originally Posted by domain007
Yeah the limp mode codes are the 29e2 fuel injection rail pressure and 29f2 high pressure pump/ open loop set too high. Sometimes i also get ******* ******** detected codes but that's once in 1k kms or so. Can a bad o2 sensor or bad coil packs cause this?
Yes, you can try setting open loop to 60 and logging again. Get a 3rd gear log instead of 4th so you can take it to 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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Default 05-15-2018, 10:38 AM

Thanks very much for the help is the 16 psi of boost something I should worry about?
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Default 05-15-2018, 10:52 AM

Quote:
Originally Posted by domain007
Thanks very much for the help is the 16 psi of boost something I should worry about?
Nope, I put about 28 psi in my N54 all day


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Default 05-15-2018, 10:55 AM

Hahaha perfect I was just a little worried because it was erratic. I'll take a few logs when I get home

Last edited by domain007; 05-15-2018 at 10:56 AM.. Reason: Added info
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Default 05-15-2018, 12:01 PM

Quote:
Originally Posted by domain007
Hahaha perfect I was just a little worried because it was erratic. I'll take a few logs when I get home



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Default 05-15-2018, 12:01 PM

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Originally Posted by Payam @ BMS
Nope, I put about 28 psi in my N54 all day
show off lol



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Default 05-15-2018, 12:46 PM

Quote:
Originally Posted by Dave @ Fuel-it!
show off lol
Pssh, don't be modest. You gotta update your sig


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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Default 05-15-2018, 06:21 PM

So I took a few more logs with the requested settings. Fuel open set to 70, and wastegate adaptation climbed to 108 on its own. No weird codes, and the overboosting seems to have stopped for now let me know if something looks out of whack
Attached Files
File Type: csv 2018-05-15 17_46_50.csv (19.8 KB, 7 views)
File Type: csv 2018-05-15 17_53_02.csv (14.5 KB, 4 views)
File Type: csv 2018-05-15 17_54_15.csv (17.4 KB, 5 views)
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Default 05-15-2018, 09:01 PM

Quote:
Originally Posted by domain007
So I took a few more logs with the requested settings. Fuel open set to 70, and wastegate adaptation climbed to 108 on its own. No weird codes, and the overboosting seems to have stopped for now let me know if something looks out of whack
Overall logs look better. Boost looks to be pretty much right at target.

Few things to note- some timing drops & LPFP pressure is dropping to the low 50's - may be time to look into an upgrade.



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Default 05-16-2018, 06:05 AM

To try and better timing, I'll install new bosch coils and see if that improves it I'll keep you guys posted, thanks for the help!
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Default 05-16-2018, 11:17 AM

Quote:
Originally Posted by domain007
To try and better timing, I'll install new bosch coils and see if that improves it I'll keep you guys posted, thanks for the help!
No problem- if looking @ coilpacks, i'd consider Eldor- seem to be a bit better



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Default 05-16-2018, 07:24 PM

Unrelated question, whats a happy wastegate adaptation number? is lower better or higher better? before i did the update i was always sitting around 80 now shes sitting at 110, is that better, worse?
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Default 05-16-2018, 07:51 PM

It varies from car to car. A minor boost leak can cause it to rise as well as varying conditions.



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