NefMoto

Hey all!
So the long story short is that I CAN NOT hit even 1 bar with K03 no matter what I do... I've tried logging today and results are attached (please open them in ecuxplot). AFR looks OK. No knock, no retard. Wastegate duty cycle is interesting... at WOT it doesn't go lower than ~50%. Also desired boost maxes out at 0,72 (how the hell it is desired only 0.72 when my LDRXN whole map is 200s and KFMIRL maxes out at 195???). Also Lambda for part protection at WOT in second and third gear enriching mixture upto 0.82 (but with LAMFA I already enrich mixture to that at wot). Also ChargeLimitEngineProtection is going down at WOT...

Please help! :)

P.S> logs are done from complete stop to third gear (as you can see by RPM climb)

Can't tell a whole lot from your log. It is not LDRXN or any part of LDRLMX (i.e. ldrlms, ldrlts) as rlmax is not limiting rlsol.

I could log other variables, just tell me which  ;)

"hitting"? Forget about logging actual boost if you can't even get *requested* boost anywhere useful.

Please use the filter feature of ECUxPlot, it is impossible to see what is going on :(

Do a FULL WOT 3rd (or 2nd gear) pull from low rpm to high rpm.

make sure to log gear and accelerator pedal position, and graph using RPM as the x axis, not time.

(http://nyet.org/cars/logs/turbinos%20darbas_20120201_171621.png)

Did you modify KFLDHBN?

It's not KFLDHBN as rlsol isn't being limited by rlmax.

rlmax does follow ldrlts for part of the log but it remains above 180 specified load.

I think that it's KFMIOP limiting KFMIRL via mimax_w -> mifa_w/mifal_w -> milsol_w.

His KFMIOP load axis maxes out at 145 with a max torque value of 45.

Ok, gonna do full pull and log acc pedal, gear, rpm. What else to log? requested boost? wastegate dc? afr? ;)

Log these:
mimax_w, mifa_w, mifal_w, milsol_w

Yes, I even tried to up KFLDHBN a little bit... Still no result

OK, gonna be back with the results tommorow :)

P.S> Question about KFKHFM map. How does it fix maf data? If for example coefficient is 1.1000 will ecu enrich mixture or make it leaner?  :-\

An IOP that is too low will NOT result in limiting req load...

BTW: My kfmiop was originally with the X axis 145 maxed

My me7logger couldn't find mimax_w, mifal_w, milsol_w (only mifa_w is there) Could someone help me out with finding them? I've attached bin file

How about MISOPL1_W?


Take a look at the relationship of the variables I posted starting in MDMAX.

misopl1_w is there and also misol_w but not milsol_W

Everything i have starting with mi...

;miasrl_w         ;{RequestedTorqueTractionControl}   ; {Indiziertes Soll-Motormoment ASR für langsamen Eingriff}
;miasrs_w         ;{}                                 ; {Indiziertes Soll-Motormoment ASR für schnellen Eingriff}
;miext_w          ;{}                                 ; {von außen (ASR, GS, usw.) angefordertes indiziertes Motormoment}
mifa_w           ;{}                                 ; {indiziertes Motormoment Fahrerwunsch}
;mifab_w          ;{}                                 ; {Begrenztes indiziertes Fahrerwunschmoment}
;miges_w          ;{}                                 ; {Indiziertes Soll-Motormoment für Getriebeschutz}
;migs_w           ;{}                                 ; {Indiziertes Soll-Motormoment GS für schnellen Eingriff}
;miist_w          ;{}                                 ; {indiziertes Motormoment Hochdruckphase Istwert}
misol_w          ;{}                                 ; {Indiziertes resultierendes Sollmoment}
misopl1_w        ;{}                                 ; {Solluftmoment, rückgerechnet auf Lambda=1 und zwopt}
;miszul_w 

UPDATE: Couldn't log anything today because weather hit -20C and all roads were too slippery to do normal pull. But I've changed kfmiop x axis (please see image attached). Imediatelly my part throttle felt much much better as if some torque limit was disabled, but I started getting "Engine Torque Monitoring 2 - control limit exceeded" (which means that my accelerator pedal is disabled every few kilometers!).

I really can not figure this one out, please advise ;)

Did you adjust the other maps that share this axis? I tried but had poor results because of erratic timing and ran out of enthusiasm.

I have no other maps defined that share same axis

Here's log for everything I could find. miist_w looks suspicious, but I need some opinions on these logs...

Please get a log where you are WOT for more than a half a second :(

Those logs are entirely useless.

Ok, gonna redo them... :)

Yup, as a guide, my 3rd gear WOT run lasts around 11 s from 1,200 to 7,000 rpm and the 4th gear WOT run about 22 seconds and that's with over 300 lbft peak so yours will be longer.

I only observed issues such as IDCs > 100% in the 4th gear WOT run, so if you want to flush out little gremlins, the longer you can can spend at high loads, the better.

TTQS

4th gear at 7krpm is impossible (or just not prudent) in most areas around me :(

even 3rd is iffy :)

finally I've hit 1BAR and more! :)

Had to edit kfmiop axis, kfzwop/2 maps and then to disable torque monitor 2 few other maps. Logs attached (normal 3rd gear run)

With your IOP map in the first post you are effectively limiting your max torque to less than 50%.

Rick

Thanks Rick, I already changed my kfmiop axis and also had to change kfzwop/2 maps (Originally my kfmiop maxed out at 145). Then I started getting torque monitor nr 2 dtcs. Changed some more maps (second attached file) and everything was fixed...

Please see the third image ("Voltage to pedal.jpg"). How can I convert these voltages to actual accelerator pedal position in percentage?

You are doing it wrong. You shouldn't have the need to edit KFMIOP that much and you shouldn't need to disable torque monitoring.
KFMIOP should be the inverse of KFMIRL, sortof. Send me your bin and ori and I'll fix it for you.

Gonzo I know that :) I have created calculator for kfmiop... But problem is that my original bin file is very different to others. For example my kfmiop x axis max out at 145! That means that my iop is limited to 1450+300mbar = ~ 750mbar of boost. Anyway, I have set up my kfmiop good. But my ecu has not ONE but TWO monitor checks. And the second one is that I had to disable until proper change.

First torque monitor that checks my kfmiop is sorted out ;)

Second monitor is checking maps that has ending "*_UM".

Ofcourse I can attach ori file for you to check out if you want ;) Second file is my current tune that gives me no torque monitor DTCs but still has FF'd KFMPNS_UM and KFMPED_UM maps.

P.S> Basically if I don't edit kfmiop axis ant leave it at 145 then my part throttle sucks and doesnt climb over 0.8bar of boost. If I edit axis and then recalculate KFZWOP/2 maps (because they share same x axis as iop) then I'm all set except for torque monitor. Then finally I've edited my kfmi_um map and few others, that limit torque and bam - no more torque monitor 2 errors.

All I need to fix now is KFMPNS_UM and KFMPED_UM. I can not understant what voltage x axis resembles in these maps.

I'll take a look at it in a few and I'll fix it for you. You do NOT need a calculator for KFMIOP. It literally takes seconds to claibrate. I have done BT files without needing to FF any torque monitoring maps.

I created calculator to be as precise as possible. Right now my bin works OK, but for some very odd reason I hit boost 1bar hard limit. Gonna log requested load tommorow to see if car reaches 190 as programmed.

P.S> I need to reach 1.2 BAR of boost at ~4000rpm

why doesn't it? ignition, wg, or throttle plate?

Gonna post some logs tomorow regarding this thing :) I just noticed this because I have boost gauge

Ok, did some more logs today :) Looks like I have some AFR problems and that ends up as being way to high EGTs. Please help me analyze these logs, to finally find which component of my car is dying...

Now I understand why I have such a bad fuel economy - o2 sensor is trying to enrich mixture to help cool down egts... But why mixture is lean?? Only thing I could suspect is MAF, but it has steady curve of airflow... Any ideas?

If you are having AFR problems, get a wideband sensor. DO NOT GUESS. Still, you can log narrow band voltages (I dont see them in your log) until then.

Also, you will want to numb BTS quite a bit if you are running a properly scaled MAF.

the EGT model will go sky high.

just monitor your REAL EGTs to make sure you stay safe.

Also, I REALLY dont understand your WGDC.

It makes absolutely no sense. Your KFLDRL must be completely screwed up. Can you log pre-lin WGDC?

If I'm not mistaken, this car IS wideband.

I think I can fix most of your issues. When I find a little time, I'll PM ya with some help.

My car HAS wideband o2 sensor ;)

I haven't even defined KFLDRL map! What does this map do?

I'll log prelin and post it tommorow :) maybe this will clear up some mysteries...

Could you please direct me to maps that might need changing? :) That wastegate duty cycle is really weird... Looks like it's always open, even on max boost  ???

yea, it should stay at 95% much longer, then fall below just before req meets actual (D term), then even out when it meets (P term) and stabilize (I term).

You'll have to read up on PID controllers.

Just defined KFLDRL map in my bin... Looks normal, doesn't it?

A little fix to the LDIATA and new logs. Still very weird wastegate operation... Should I try to edit KFLDIMX map or something? What other maps could control wastegate operation??

P.S> Why is my EGT (part protection) so high? I have no cat, no post-cat o2 sensor and no sai, so maybe my egt model is wrong?

Where can I get more information on this?

actually that doesn't look bad. it's capped at 95% where it is supposed to be. The D term is a BIT aggressive, but not bad (it is pulling wg a bit early) if you look at the pressure deviation when it starts cutting.


Not sure, but you could numb BTS a bit.

Maybe you know what variables could I log to find out what could be the cause of high egts?

P.S> I thought that wastegate dc should be as low as possible to make turbo spool up faster...

HIGH WGDC means more pressure diverted from the wastegate actuator, which means wg closed
LOW WGDC means less pressure diverted from the wastegate actuator, which means wg open

your calc EGTs aren't that high, imo. Just numb BTS a bit and you'll be fine.

Oh snap, I've mixed them up :) thanks for clarification...
Also, what do you think about overall timing? I feel really big drop of torque in low rpm range and whole timing doesn't even reach stock values...

And one last question: If you open my csv log, you'll see that my requested engine load is never reached by actual load, but boost reaches calculated values (190 torque = 1200mbar of boost). Actual load hardly reaches 180. Is this normal?

You have zero timing correction at peak load. Increase requested timing until you see some correction.


Its only not normal if your actual is *really* far off, which it doesn't appear to be.

If your intake setup is stock, don't worry about it.

If not, you could raise your g/sec a bit if you like. be advised, though, if you change load around, all sorts of things might change, and you might have to start tuning from scratch (particularly fueling and timing)

I've tried to advance ignition angle a little bit, but am getting bad results. Even on very low load I'm getting knocks for some unknown reason.
Knocks start around 2000RPM. KFZW/2 aren't crazy either... Any ideas? Maybe my knock sensors are dying?

Thats fine.

With respect, hitting -12 knock retard is pretty far from fine.

I meant at 2krpm. Wasn't looking at the rest. screen wasn't wide enough :(

The s4wiki advises single digit CFs.

In any case, this isn't something strange.

Just pull more timing after 3k, leave 2k timing alone.

2800-7000 rpm my timing is retarded 12 degrees, even though my ignition angle isn't advanced THAT MUCH. Either knocks sensor i freaking out or there's fueling problem...

Maybe flash back to stock and log CF as well as knock voltages to rule out the sensors.

Found a problem... sort of. My AFR goes lean on part throttle/wot. On idle it is OK, but if RPM > 1500, then it goes lean. I don't know why, but temporarily fixed it by changing FKKVS +0.25 across the table.

I'm intereted in why I have to make such a huge adjustment to fueling... Maybe there's some unmetered air is comming through somewhere?

Also, for a 340cc injectors with code 0280156023 I calculate KRKTE about 0.06582 (1.8T engine). Now with this value car even wouldn't start. For the proper idle I have to use 0.10571. And that is a very big differece! Maybe my KRKTE calculations are wrong?