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-   -   Help with log (http://www.n54tech.com/forums/showthread.php?t=53152)

domain007 05-14-2018 07:06 PM

Help with log
 
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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

Dave @ Fuel-it! 05-14-2018 07:10 PM

Quote:

Originally Posted by domain007 (Post )
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

domain007 05-14-2018 07:18 PM

No problem, I'll go take one right now haha ill re upload one soon

domain007 05-14-2018 08:07 PM

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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).

Payam @ BMS 05-14-2018 08:51 PM

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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.

domain007 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 :)

Payam @ BMS 05-14-2018 09:02 PM

Quote:

Originally Posted by domain007 (Post )
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.

domain007 05-14-2018 10:00 PM

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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 :)

Steve @ BMS/Fuel-It! 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?

domain007 05-15-2018 12:04 AM

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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

Payam @ BMS 05-15-2018 09:38 AM

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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?

domain007 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?

Payam @ BMS 05-15-2018 10:25 AM

Quote:

Originally Posted by domain007 (Post )
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.

domain007 05-15-2018 10:38 AM

Thanks very much for the help :) is the 16 psi of boost something I should worry about?

Payam @ BMS 05-15-2018 10:52 AM

Quote:

Originally Posted by domain007 (Post )
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 ;)

domain007 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

Dave @ Fuel-it! 05-15-2018 12:01 PM

Quote:

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

:popcorn

Dave @ Fuel-it! 05-15-2018 12:01 PM

Quote:

Originally Posted by Payam @ BMS (Post )
Nope, I put about 28 psi in my N54 all day ;)

show off :rolleyes2 lol

Payam @ BMS 05-15-2018 12:46 PM

Quote:

Originally Posted by Dave @ Fuel-it! (Post )
show off :rolleyes2 lol

Pssh, don't be modest. You gotta update your sig ;)

domain007 05-15-2018 06:21 PM

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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 :)

Dave @ Fuel-it! 05-15-2018 09:01 PM

Quote:

Originally Posted by domain007 (Post )
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.

domain007 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!

Dave @ Fuel-it! 05-16-2018 11:17 AM

Quote:

Originally Posted by domain007 (Post )
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

domain007 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?

Steve @ BMS/Fuel-It! 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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