RomRaider

That's a lot of negative correction for >50 g/s. You should confirm acceptable AFR at WOT with a wideband.

Please help look at my current Learning View tool log, currently my car has an check engine like code P0139. I was wonder if this has anything to do with it.

From Learing View Tool, My knock learing table is all zero. But I still find "negative" fine correction in the log file.

Why?

Depends on when you read it with Learning View and when you logged. Also remember that a change in the IAM or reflash will clear the FLKC table.

Post your rom id and I can double check to make sure there's not a mistake in the offsets for your ECU.

does the relation of the MAF tool results correspond to lview ?

so if i see majority -ve numbers on the maf tool i should see -ve numbers on the lview as well ????

Learning View shows you the long-term fuel trims across specific airflow ranges which are determined based on patterns in closed loop of A/F correction. To some degree, it should generally follow the MAF tool as far as the average recommended airflow correction over the entire specific airflow range in question. Positive A/F Learning values indicate a percentage of fuel added and negative A/F Learning values indicate a percentage of fuel removed, both to more closely hit stoich in closed loop with less short-term correction and also to, hopefully, with the assumption to better hit open loop targets - the D range - (although obviously there's no feedback in open loop to verify).

is it fair to say that when logging for MAF TOOL that -ve values the ECU removing some fuel to get to stoich (in the closed loop region)

I'm not sure what you are asking with regards to "-ve" and what that has to do with the MAF tool. Do you mean negative fuel trims? Then yes, it is removing fuel.

I read right after logging to double check. I have found this discrepancies.

My ROM ID is AH751-5142 (A4TE100G-ET). My car is 03 UK Spec WRX.

Is it possible that the learing process in ECU is not long enough to be registered in RAM??

Thank you very much for your help.

No, when you log 'Fine Learning Knock Correction*' it is exactly what is in the table for current load/rpm being applied and would be exactly what was reflected in learning view (for that particular cell) if you were to do them at exactly the same time.

I checked the Learning View defs for A4TE100G and they are correct. Your issue is likely one of the following:
1. You are not logging 'Fine Learning Knock Correction*' in RomRaider but one of the other knock correction parameters or something else with another logger.
2. The IAM changed (maybe only briefly and then back to its 'normal value' during the run) and therefore the FLKC table was cleared. Or it may have changed after you stopped logging (but were still driving).
3. The negative value you saw during logging was changed back to zero sometime during a run and was not caught on your logger because you did not hit the load/rpm cell again to see that it changed again.
4. Your ECU id was changed in your rom and does not reflect the A4TE100G rom (I can rule this out if you post up the ECU id that Learning View shows).

I would try this:
1. Log load, rpm, and FLKC and put it on the dashboard with an alert for negative FLKC.
2. When you get negative FLKC, if you can safely, push the clutch in and pull over and connect with learning view.
3. Looking at your load/rpm in the logs where the negative FLKC occured, determine which cell had the negative correction and make sure that appears in Learning View (learning view uses load in g/rev - make sure you also logging with those units).

Hi! Long time reader first time poster...
I really like Learning View and have used it with usdm ecu's but can not use it with my jdm ecu. What do I need to do for the Learning View to support my ecu? Let me know Merchgod...
Thanks...
B

All the roms that are currently supported by the ECU defs are also supported by Learning View - USDM, JDM, EDM, ADM, however, that doesn't mean your specific ECU is supported. If not, then submit your ROM (pulled with Ecuflash) for both ECU/logger defs and learning view (if you have already then you don't need to do it again).

This is a friend of mines car.



MAF off, O2 sensor out, FPR turned up too high, or what? WB seems to confirm this.

Thanks!

I'm guessing that the >40 range is actually just as far off, but the car hasn't been driving much in that range since the last ECU reset. I made the mistake of believing those numbers a couple times before I realized how much driving it takes to get a significant number there.

I'm also guessing the the injector scaling is too low. Or the FPR is failing, or the FP itself is dying. Or the intake has been changed but not rescaled. But something is way off. IIRC, there is parameter you can log to check the fuel pressure.

My car won't show trims higher than 15% no matter how far off things are. (However it does seem to correct enough when running in closed loop, as my observed AFRs were generally around 14.7.) With the readings in that screenshot I wouldn't be surprised if things were actually off more than 15%, especially at the lowest MAF reading.

HI guys,

I would really appreciate if somebody could take a look at the readout of the learning view tool.

Car is a 06 EDM WRX, stock (just a different muffler).
I use a modified stock EDM map (used a stage 1 USDM map of gabedude as a sample...) and modified boost a little more, running on 91 gas.

I use this map now for 2 months and about 3500km. Initially the IAM went instantly to 1 and afterwards I did some WOT pulls where everything was fine and the IAM stayed there. I did a quick check with the learning view tool about 2 weeks/1500km ago where the IAM was 0,9375 and still is.

The last 2 weeks I was on holiday so today I just wanted to know if the IAM improved or deteriorated more - but as I wrote above it still is at 0,9375.

Can you give me some hints which parts of the map I should look at to eliminate the little knock that must have been which let the ECU drop the IAM to 0,9375.

I have my current map and a screenshot of the learning view tool attached!
Thank you very much, yours renew