NefMoto

Thanks to all here I was able to install my innovate WB and log with ME7 logger using a rear 02 sensor address.

Attached is a log with some light driving cruising, a 2nd gear pull to 3rd gear and some fourth. The cruising/light loads was a check to see if I was getting 14.7 at light loads cruise and i am (sometimes) but when I floored it after about 3500rpm the AFR dropped to as low as 8.5 even 7 (no black smoke billowing out of the rear of the car which would be expected at that AFR and seems to be pulling ok). Question is am i having a hardware issue with the WB i.e. dodgy sensor? NOTE: I did preform a free air calibration with WB prior to install or am i actually running that rich at WOT.

And just to be sure I took another log, same story (Attached)

Edited ME7L ecu file and added the following line:
;Name,    {Alias},                        Address,  Size, Bitmask, {Unit},        S, I,            A,     B, Comment
uushk_w, {O2SVoltageSensorWB}, 0x381116,    2,  0x0000, {WB-AFR} , 0, 0, 0.009766, -9.6, {}

Car is allroad 2.7t.
630cc injectors at 4 bar (Bosch EV14 and 044 fuel pump)
KRKTE : 0.05372
Targeting 0.75 or 11 AFR on wot (91 octane)
Yes file is locked WGDC file, I will be sorting my PID after I sort fuelling

Any help appreciated.

 

I played with those injectors extensively on my old 1.8 setup.

What dead times and Temin are you using for academics sake since we have the KRK that you are using?

Hi see attached images of tvub and temin used

Edit both temin and teminva are set to the same value

(https://uploads.tapatalk-cdn.com/20200925/99a33f9d22134b97bcd819f802f4dae0.jpg)


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After looking at logs again it looks like the car is going into EGT protection (Tabgbts set at 499c). See screenshot of logs

I dont know how this can be happening as I have both lamfa and klfbts aiming for the same afr .75 or 11.

What other maps are affected once Tabgbts is reached?

KFLBTS isnt the only map, there are atleast 2 other factor maps, looks through s4 wiki again.

KFFDLBTS is zeroed and DLBTS is also zeroed, so shouldn't be affected by any other enrichment maps in BTS. Correct?

To experiment i also raised TABGBTS to 900 and did a run (attached), no change almost worse.

Any ideas?

KRKTE?

Do not post modified CSVs. Period. You're literally breaking all of the features in ECUxPlot that are designed to help you figure out exactly the sort of problem you're seeing.

What krk are you using? Stock regulator?

Is the wideband spitting out the rich number only, or is ypur afr request in log that rich as well?   Haven't had a chance to open and look at log so I am shooting from the hip and trying to get some more backstory information here

I would have but saw the modified headers and just deleted the log.

There is a ton of confusion here regarding requested vs actual. I don't get why it isn't immediately obvious if the problem is requested or the fact that actual isn't tracking requested.

They're independent problems and should be treated as such, but the whole thread here completely conflates the two and I can't figure out why.

KRKTE : 0.05372
And 4bar FPR


I only filtered as log was unnecessarily long

See attached log (not filtered)

Car goes into BTS in this log and you can see requested AFR dropping as it should but actual just not matching (dropping too much). When requesting 1 lambda its not too far off.

It looks like requested AFR and actual AFR are not matching when not 1 (14.7).
MAF/ Air filter is stock only injectors and fuel pump upgraded. Is there a map I must look at to pull requested AFR and actual AFR back in line?

Thanks for replies, all comments helpful

Not sure why you are having problems getting a single gear wot pull

Again, you are making it impossible to use ECUxPlot as it was intended.

The whole point is to let ECUxPlot do the filtering for you.

Main reason for the poor logs was bad traffic, anyway managed to get out one of the nights and made three logs.

Now i can see how good EcuxPlot is. Inserting my injectors cc it can give me a calculated AFR. It shows im a little leaner than my requested according to calculated this would be due to my change in KRKTE to 0.051. I did check my fuel trims after all the runs and they showed as follows:

0.0@idle B1S1 -2.3@part B1S1 0.6@idle B2S1 -5.5@part B2S1

Should I leave well enough alone here or could i tidy up with FKKVS fixer?

Also with the results from EcuxPlot should i start thinking my wideband sensor is bad?


I also noticed on a long run up i was pulling a lot of timing due to IAT. Has anyone ever modified KFZWWLNM slightly to prevent this at say 50 degrees C?   

Where is req boost?

why are you requesting 11AFR?

There is zero reason to touch FKKVS

you can do everything with KRKTE/TVUB and MAF scaling to get trims to within 1%

anything left can be done in KFKHFM or KFLF (for open loop WOT fueling since you're narrow band) but are generally unnecessary unless you have a very oddball fueling setup or running closer to out of injector (>85% DC)

If you CANT get to 1% trims with just KRKTE/TVUB and MAF scaling, something is wrong with your hardware

Thanks for the replies


Locked Waste gate File (for the moment) and only 91 octane fuel here.


Ok so for example if i am happy with my KRKTE at WOT and my fuel trims are still off I should adjust TVUB? My MAF is still stock so scaling shouldn't be necessary? When adjust TVUB how do I know what voltage values to adjust?

https://www.hamotorsports.com/pages/how-to-set-injector-flow-rates-and-set-injector-dead-times

The above link gives you a good basis....you can figure it out from there.

TVUB affects idle more than part

start with theoretical krkte/tvub from datasheet

then, roughly:

scale KRKTE until part is close to 0
scale TVUB until part/idle are close together
rinse, repeat.

If you have a stock maf yes, leave MLHFM and KFKHFM alone.

fine tuning can be done with either KFLF, KFKHFM, or FKKVS ymmv.

Theoretical KRKTE is .053 (34.125/635cc)
My TVUB seems good only -0.2% on idle trims but my partial is still out -10%. If I scale KRKTE i will end up with something like 0.049 which i would have though is way to small for ev14 550cc at 4 bar. What are peoples opinions?   
 
I have attached another log, this shows ps_w a lot lower then actual boost, even though my maf and intake are stock should i rescale? 

Note I have done the 5120 hack as hit ps_w on a previous log and ran a bit lean at peak boost.

Where is your req boost?
And why your throttle plate is closing?

I'm.after uploading the wrong log (not a full WOT run), I will upload the proper one tomorrow. I'm still not sure why throttle body is closing? What could I log to possibly see this? Also what will I log for requested boost?

Edit: Torque intervention is FF'd so I'm unsure what is causing throttle body to close

Could still be a leak, 10% is a pretty big error especially if MAF is stock. Or you have a leaky injector, but that would show up in idle trims.

Don't do this. Leave torque intervention alone and fix the root cause. Period.

I don't understand what the problem is.

https://files.s4wiki.com/ME7L-ecu/

I have pressure tested intake and no leaks, any other ideas?

Could a shit IRL/IOP cause TB to close?

Edit: This is prob whats causing is
https://s4wiki.com/wiki/Throttle_cut

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since you have yet to log req boost who knows

Lol, if TB is closing than you're most of the time far from req.

Always log req and actual.