[Acoop]

Hi everyone,
Tonight I decided to do a 3rd gear pull since it was 20 degrees out. Felt amazing for 3 seconds then boost complete cut and check engine light popped on. First time this has happened. Can anyone take a look at my logs and tell me if anything is alarming? I'm at 5000ft elevation and my car is FBO w/ inlets, running pump 91.

The zip file atached contains both a "normal" 3rd gear pull, and the low boost pull..

Thanks,
ACoop

[E93Beast]

Originally Posted by Acoop

Hi everyone,
Tonight I decided to do a 3rd gear pull since it was 20 degrees out. Felt amazing for 3 seconds then boost complete cut and check engine light popped on. First time this has happened. Can anyone take a look at my logs and tell me if anything is alarming? I'm at 5000ft elevation and my car is FBO w/ inlets, running pump 91.

The zip file atached contains both a "normal" 3rd gear pull, and the low boost pull..

Thanks,
ACoop

You over boosted and got kicked to map 4.
Is there a reason PID gain is set to 30 ?
If not, set that to 25.
Log again and see where you are at.

[Acoop]

Originally Posted by CLEAN E93

You over boosted and got kicked to map 4.
Is there a reason PID gain is set to 30 ?
If not, set that to 25.
Log again and see where you are at.

So I set PID gain to 25. Did a pull and got sent to map 4. It gave me code 5 "fuel trim variance" no clue what's causing this. Any ideas?

[E93Beast]

Post a log
Generally speaking, a fuel trims variance can be caused by an injector or 02 sensor.

[Acoop]

Originally Posted by CLEAN E93

Post a log
Generally speaking, a fuel trims variance can be caused by an injector or 02 sensor.

I attached a screenshot of the jb4 log. I can provide an actual file later tonight. Let me know if you can tell anything by this or if I should change anything.

[E93Beast]

Originally Posted by Acoop

I attached a screenshot of the jb4 log. I can provide an actual file later tonight. Let me know if you can tell anything by this or if I should change anything.

Need the .csv

[Acoop]

Originally Posted by CLEAN E93

Need the .csv

Attached it.

[E93Beast]

Originally Posted by Acoop

Attached it.

List of mods ?
Trims do deviate quite a bit. Problem is on JB4 trims not correcting =25. 1 bank requests more fuel (over 25) the other says its getting too much fuel (values under 25) and asks for less fuel. Hence safety #5
Any 02 sensor codes ?
What index injectors ?
Any PI on the car ?
As far as trims variance, most likely 02 but sometimes a simple reset works for some as I dont see the car going to open loop 1/4 on Jb4.
Overboost.... what are menu 10, 11, and 12 set to ?
Factory diverter valves or ??
As I said, list of mods plz these are just guesses as I dont know how you are set up.
Definitely check codes though.

[Acoop]

Originally Posted by CLEAN E93

List of mods ?
Trims do deviate quite a bit. Problem is on JB4 trims not correcting =25. 1 bank requests more fuel (over 25) the other says its getting too much fuel (values under 25) and asks for less fuel. Hence safety #5
Any 02 sensor codes ?
What index injectors ?
Any PI on the car ?
As far as trims variance, most likely 02 but sometimes a simple reset works for some as I dont see the car going to open loop 1/4 on Jb4.
Overboost.... what are menu 10, 11, and 12 set to ?
Factory diverter valves or ??
As I said, list of mods plz these are just guesses as I dont know how you are set up.
Definitely check codes though.

I am FBO with inlets. So intercooler, chargepipe and BOV, downpipes, DCI, and inlets. stock fuel setup. One bank is index 12, and the other is index 6 and 9s. I am using map 2 on the JB4.

[E93Beast]

Originally Posted by Acoop

I am FBO with inlets. So intercooler, chargepipe and BOV, downpipes, DCI, and inlets. stock fuel setup. One bank is index 12, and the other is index 6 and 9s. I am using map 2 on the JB4.

Ok, I would upgrade to all index 12 for starters.
What BOV ?
Menu 10, 11, and 12 ?
Nvm on 10 = 30
Any codes ?

[Acoop]

Originally Posted by CLEAN E93

Ok, I would upgrade to all index 12 for starters.
What BOV ?
Menu 10, 11, and 12 ?
Nvm on 10 = 30
Any codes ?

Active Autowerks CP and BOV
Not sure about menu 10, 11, 12, never changed them?
Only codes I have been getting is 2DED, 2FBE, and recently 30FC.

[E93Beast]

Originally Posted by Acoop

Active Autowerks CP and BOV
Not sure about menu 10, 11, 12, never changed them?
Only codes I have been getting is 2DED, 2FBE, and recently 30FC.

Not familiar with that BOV. Maybe it needs the bigger reference line ? Many aftermarket BOVs recommend a larger line for it to work properly.
Description of codes ?

[Acoop]

Originally Posted by CLEAN E93

Not familiar with that BOV. Maybe it needs the bigger reference line ? Many aftermarket BOVs recommend a larger line for it to work properly.
Description of codes ?

I do have a larger line, and I had no issues before with the BOV.

[E93Beast]

Originally Posted by Acoop

I do have a larger line, and I had no issues before with the BOV.

Interesting
2DED from what I have seen is something stays on while car is sleeping / interrupts sleep.
2FBE I remember reading fuel pressure too high in rail after shut off. Not sure about that one, but thats what I remember.
30FC can be a few things. Tune related, altitude, wastegates
Tough to diagnose. Most people with wastegate issues tend to NOT make boost, you go over target. You are at high elevation so could just be tune related ?
I remember a couple of people getting that code when normally at a lower altitude, then climbing higher altitudes. When they were back at their regular altitude, code went away after clearing it and never came back.
See what menu 12 is set at , but if it never happened before, and you are at same altitude, and no changes made to the car or flash, I doubt that could help but worth a try.
Your FF in last two logs is pretty high, but can be caused by higher altitude.
FF Climbs when you have a boost leak and wgdc will also climb, not the case here. Your wgdc is ok and you over shoot target...
Do you have a BEF loaded ?
Aside from all this, the trims variance seems to be injector related IMO.
Any rough starts ? Long cranks ?
Let the car sit over night and pull the plugs. See if any come out wet with fuel or even smell of fuel. Check plugs for any type of carbon / fouling.

Wish I could help more, sorry

[Acoop]

Originally Posted by CLEAN E93

Interesting
2DED from what I have seen is something stays on while car is sleeping / interrupts sleep.
2FBE I remember reading fuel pressure too high in rail after shut off. Not sure about that one, but thats what I remember.
30FC can be a few things. Tune related, altitude, wastegates
Tough to diagnose. Most people with wastegate issues tend to NOT make boost, you go over target. You are at high elevation so could just be tune related ?
I remember a couple of people getting that code when normally at a lower altitude, then climbing higher altitudes. When they were back at their regular altitude, code went away after clearing it and never came back.
See what menu 12 is set at , but if it never happened before, and you are at same altitude, and no changes made to the car or flash, I doubt that could help but worth a try.
Your FF in last two logs is pretty high, but can be caused by higher altitude.
FF Climbs when you have a boost leak and wgdc will also climb, not the case here. Your wgdc is ok and you over shoot target...
Do you have a BEF loaded ?
Aside from all this, the trims variance seems to be injector related IMO.
Any rough starts ? Long cranks ?
Let the car sit over night and pull the plugs. See if any come out wet with fuel or even smell of fuel. Check plugs for any type of carbon / fouling.

Wish I could help more, sorry

Just JB4 no BEF. Starts perfect every time. I have had oil in my coils and on top of my plugs. Pretty sure from a valve cover gasket, not confirmed yet though.

[Acoop]

Pulled a plug.

[mweisdorfer]

Originally Posted by Acoop

Just JB4 no BEF. Starts perfect every time. I have had oil in my coils and on top of my plugs. Pretty sure from a valve cover gasket, not confirmed yet though.

Typically a valve cover gasket, yes. Did you try & swap coils to try and get the code to move to another cylinder?

You probably should upgrade bank 2 to index 12

[E93Beast]

Originally Posted by Acoop

Pulled a plug.

I would load a "pump" BEF
But regardless, I think the trims variance comes from injectors.

[Acoop]

Originally Posted by mweisdorfer

Typically a valve cover gasket, yes. Did you try & swap coils to try and get the code to move to another cylinder?

You probably should upgrade bank 2 to index 12

I never had a misfire code so not sure how swapping could would help. And after pulling plugs I saw no evidence of a valve cover gasket, pretty sure I just spilled oil when filling it up. And will index 12 really help on the one bank?

[Acoop]

Originally Posted by CLEAN E93

I would load a "pump" BEF
But regardless, I think the trims variance comes from injectors.

Comes from my one bank of non index 12s?

[E93Beast]

Originally Posted by Acoop

Comes from my one bank of non index 12s?

Hard to say. Neither bank maxes out plus or minus. They just dont mirror each other. Hard to say which bank is correct. Thats why I said pull plugs to see if any come out wet. That would help narrow down a potential bad injector.
An injector(s) not spraying enough fuel would cause trims to go up. An injector(s) spraying too much fuel will cause trims to dive down.
To avoid headaches, I would do all index 12s as I stated on an earlier post I believe.

[Acoop]

Originally Posted by CLEAN E93

Hard to say. Neither bank maxes out plus or minus. They just dont mirror each other. Hard to say which bank is correct. Thats why I said pull plugs to see if any come out wet. That would help narrow down a potential bad injector.
An injector(s) not spraying enough fuel would cause trims to go up. An injector(s) spraying too much fuel will cause trims to dive down.
To avoid headaches, I would do all index 12s as I stated on an earlier post I believe.

Alright gotcha, but to check if I have any bad injectors I should let the car sit overnight and see the plugs in the morning and check for them being wet. And if I find any wet then that means it is a bad injector correct? Any clue if this is related to me over boosting though?