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Snowman Snowman is offline
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Default Need help reviewing logs, strange behavior - 06-22-2018, 01:26 AM

Yesterday i finally finalized the install of all the parts, now my N54 335 is equipped with:
Stage 3 fuel pumps, dual Walbro 450s with only 1 running atm
PI from BMP
BMS PI Controller
JB4 with Bluetooth connectivity
BMS DCI
Full E85
NGK 95570 0,22" gap
BMS E85 BEF

I took it out for a short test drive but the car feels very strange, the power output is very jerky.
I also thought at first i had a huge overboost issue, but for some reason it targets around 18psi at map 4, which is supposed to be "safety map"
Also my fuel gauge reads nothing, it doesnt move once i turn the car on.

If i look at the logs it looks like the PI is doing all the fuelling since trims go to 0, so i will adjust the fuelling throughout the range.
Any other ideas and opinions would be appreciated since there seems to be quite alot of things going on in the log..

https://***********/u/snowman89/test...-8-11-14-17-20
Attached Files
File Type: csv 2018-06-22 09_13_40.csv (13.9 KB, 11 views)
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Default 06-22-2018, 02:06 AM

Thought all fuel bias needs to be set to 0 but I could be wrong

Also you may want to enable 6 cyl timing logging


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Default 06-22-2018, 02:09 AM

Quote:
Originally Posted by Haynpunch
Thought all fuel bias needs to be set to 0 but I could be wrong

Also you may want to enable 6 cyl timing logging
According to the stickied thread in n54 it should be set to 50 initially, but I really would have to lower it alot.

Yes I will do that aswell once in near the car again
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Default 06-22-2018, 02:23 AM

Quote:
Originally Posted by Snowman
According to the stickied thread in n54 it should be set to 50 initially, but I really would have to lower it alot.

Yes I will do that aswell once in near the car again
http://www.n54tech.com/forums/showthread.php?t=10605
Post#3
Sticky show Fuel Bias at 0, Duty Bias at 50

In your log it shows you have Fuel Bias set to 50, Duty Bias set to 0, But again I could be wrong


07 E90 AT 335I 130k
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Default 06-22-2018, 02:27 AM

Quote:
Originally Posted by Haynpunch
http://www.n54tech.com/forums/showthread.php?t=10605
Post#3
Sticky show Fuel Bias at 0, Duty Bias at 50

In your log it shows you have Fuel Bias set to 50, Duty Bias set to 0, But again I could be wrong
You are correct, though im running port injection and according to the "setup thread" --> http://www.n54tech.com/forums/showthread.php?t=28478
I should "3) Set fuel bias to 50 for all RPM spots. This indicates to run the JB4s default curve. From that point you can raise or lower the values by RPM to tell the JB4 to add more or less fuel based on the current tuning conditions. Note the JB4 also takes in to account gear, low fuel pressure, rate of boost gain, intake temperatures, and other factors to arrive at a final port injection output. The output value is displayed as fuel-enrich in JB4 logs."

However i will try and set "Duty bias" to 50 aswell since it is described in the thread you linked to.
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Default 06-22-2018, 03:07 AM

Quote:
Originally Posted by Snowman
You are correct, though im running port injection and according to the "setup thread" --> http://www.n54tech.com/forums/showthread.php?t=28478
I should "3) Set fuel bias to 50 for all RPM spots. This indicates to run the JB4s default curve. From that point you can raise or lower the values by RPM to tell the JB4 to add more or less fuel based on the current tuning conditions. Note the JB4 also takes in to account gear, low fuel pressure, rate of boost gain, intake temperatures, and other factors to arrive at a final port injection output. The output value is displayed as fuel-enrich in JB4 logs."

However i will try and set "Duty bias" to 50 aswell since it is described in the thread you linked to.
I learn every day!!! thanks for setting me straight


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Default 06-22-2018, 03:15 AM

Quote:
Originally Posted by Haynpunch
I learn every day!!! thanks for setting me straight
Thank you for replying and reviewing the logs Its easy to miss something and its always good to have others review the logs.
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Default 06-22-2018, 11:27 PM

Quote:
Originally Posted by Snowman
Thank you for replying and reviewing the logs Its easy to miss something and its always good to have others review the logs.
Definetly need some work.

1st enable 6 cyl timing

You can set DB to 50 across board as well.

Are you stock turbo or hybrid?



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Default 06-22-2018, 11:49 PM

Quote:
Originally Posted by Dave @ Fuel-it!
Definetly need some work.

1st enable 6 cyl timing

You can set DB to 50 across board as well.

Are you stock turbo or hybrid?
Hehe yepp..
Stock turbos right now
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Default 06-23-2018, 07:34 AM

Here is another log that i did after some adjustments, trims are way up and boost close to target.

What do you think?
What should i adjust to smoothen out the boost?

Also isnt afr 13:1 a bit on the lean side?
When i ran the MHD stg 1+ E30-map it were around 12-12.5:1 up on higher revs.
Also i seem to have some slight problems with timing drops where i did not have them earlier on the stg 1+ mhd map, even though that map had higher timings and also boost targets.

Log file is map 1, targetting 15psi
Attached Files
File Type: csv 2018-06-23 16_04_32.csv (12.8 KB, 8 views)

Last edited by Snowman; 06-23-2018 at 09:36 AM..
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Default 06-23-2018, 09:38 AM

Here is an additional log file for map 2, targetting 17psi.
Ive done some minor adjustments to FOL and Fuel bias to get trims in order in low revs.
Seems to have quite alot of timing corrections, which i cant really understand why that is considering im running full E85.
Would ********* and IC make a large diffrence?
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File Type: csv 2018-06-23 17_09_57.csv (11.1 KB, 11 views)
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Default 06-23-2018, 10:00 AM

Quote:
Originally Posted by Snowman
Here is an additional log file for map 2, targetting 17psi.
Ive done some minor adjustments to FOL and Fuel bias to get trims in order in low revs.
Seems to have quite alot of timing corrections, which i cant really understand why that is considering im running full E85.
Would ********* and IC make a large diffrence?
Looking good to me, the timing drops you see there are normal. Really bad ones would be repeating and they would not recoup like yours are.

I would just lower FF a little to get the boost more on target. Other than that all other parameters look to be good.
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Default 06-23-2018, 10:08 AM

Quote:
Originally Posted by Payam @ BMS
Looking good to me, the timing drops you see there are normal. Really bad ones would be repeating and they would not recoup like yours are.

I would just lower FF a little to get the boost more on target. Other than that all other parameters look to be good.
Thanks!

Haha not bad to go from "Definetly need some work. " to "Looking good to me" during just a day, for a happy newbie adjusting the parameters.
I will try and lower FF a tad to see what happends.

I just gotta decide what ********, ic and cp i should get, so that i can order them..
Why did you guys stop selling your ********* :O
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Default 06-23-2018, 10:41 AM

Would you guys consider it safe to run map 2, targeting 17psi for now?
I won't use the car for track or longer pulls until I have new ic, cp and **
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Default 06-23-2018, 11:11 PM

Quote:
Originally Posted by Snowman
Would you guys consider it safe to run map 2, targeting 17psi for now?
I won't use the car for track or longer pulls until I have new ic, cp and **
You can give map 2 a shot.



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Default 06-23-2018, 11:13 PM

Quote:
Originally Posted by Snowman
Thanks!

Haha not bad to go from "Definetly need some work. " to "Looking good to me" during just a day, for a happy newbie adjusting the parameters.
I will try and lower FF a tad to see what happends.

I just gotta decide what ********, ic and cp i should get, so that i can order them..
Why did you guys stop selling your ********* :O
The Phoenix cp/TIAL combo is great...

FMIC wise- the Phoenix RACE is a great bang for your $, and will leave you plenty of headroom if you ever opt to upgrade Turbos or go single.



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Default 06-23-2018, 11:28 PM

Quote:
Originally Posted by Dave @ Fuel-it!
The Phoenix cp/TIAL combo is great...

FMIC wise- the Phoenix RACE is a great bang for your $, and will leave you plenty of headroom if you ever opt to upgrade Turbos or go single.
The problem with ordering stuff is that i will pay a huge shipping cost whenever i order items from USA. So even if i do like the BMS stuff, they dont have a ********.
Which would add an additional 100-200usd in shipping to the place where i decide to get the ********, so lets see what i get
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Default 06-24-2018, 05:26 AM

The boost seems to be fluctuate quite alot during WOT pulls.
Is this really normal?
In this log the boost flucuates quite alot between 3000-4500 which makes the power delivery feel jerky..
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File Type: csv 2018-06-24 11_39_26.csv (11.6 KB, 6 views)
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Default 06-24-2018, 09:30 PM

For some reason the car misfires quite badly on cold starts. Plugs are new and injectors about 18months index 12.
Ideas based on the log?
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File Type: csv 2018-06-25 06_02_47.csv (61.0 KB, 5 views)
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Default 06-24-2018, 09:55 PM

Quote:
Originally Posted by Snowman
The boost seems to be fluctuate quite alot during WOT pulls.
Is this really normal?
In this log the boost flucuates quite alot between 3000-4500 which makes the power delivery feel jerky..
Has the jerky feeling improved? Sometimes when going to a new map it can be “learning” and smooth out a bit...



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Default 06-24-2018, 10:09 PM

Quote:
Originally Posted by Dave @ Fuel-it!
Has the jerky feeling improved? Sometimes when going to a new map it can be “learning” and smooth out a bit...
It started getting better and then made a turn for the worse again.

However my cold start misfires are my main issue right now..
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Default 06-26-2018, 05:06 AM

Quote:
Originally Posted by Snowman
It started getting better and then made a turn for the worse again.

However my cold start misfires are my main issue right now..
Ok- let’s fix the misfire issues first, I would assume the overall feeling of the car is going to smooth out once that is fixed tbh.



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Default 06-26-2018, 05:28 AM

Yes I'm currently looking into it.
A question regarding pi adjustments.
I noticed that when I lowered fol I was hitting 50 in trims when going wot from 2000rpm.
This is before pi kicks in so from low rpm to about 2500.
Is this something to be worried about?
I would like to lower for and increase fuel bias, as I've seen others do.
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Default 06-26-2018, 11:59 AM

Okay.. Now i have done:
-Removed spark plugs, none was wet/smelling of fuel
-Reinstalled old spark plugs
Car still runs lite **** on cold starts.

Further ideas?
I will try disconnecting rear O2 sensors later today

The "coughing/stumbling" in the begining is what im talking about.
https://www.youtube.com/watch?v=aMLgCtoQV6w
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Default 06-26-2018, 09:35 PM

Quote:
Originally Posted by Snowman
Okay.. Now i have done:
-Removed spark plugs, none was wet/smelling of fuel
-Reinstalled old spark plugs
Car still runs lite **** on cold starts.

Further ideas?
I will try disconnecting rear O2 sensors later today

The "coughing/stumbling" in the begining is what im talking about.
https://www.youtube.com/watch?v=aMLgCtoQV6w
Just because plugs aren’t wet / smelling of fuel doesn’t mean they aren’t tired- smelling of fuel is usually a sign of leaky fuel injectors.

How many miles are on your plugs ?

Coilpacks ?



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