NefMoto

I’m trying to set up K-03 hybrid turbos.
I set CWMDAPP to 8, wrote about 12 logs with different DC and filled KFLDIMX with the right DC values. At least DC values are very-very close to the truth.
Turbos are K-03 Hybrid. At 2700RPM and 95%DC the boost is about 1000mbar, at 3000RPM it’s already 1520-1540mbar.
But after I changed CWMDAPP from 8 to 0 everything goes weird.
Requested DC goes up and down all the time. I’ve tried to zeroed KFLDRQ2 and LDRQ0DY and the same thing. I’ve tried to set the same values and nothing has changed.
So I’m really stuck with it. I’ve always thought that DC = KFLDIMX  + LDRQ0DY - KFLDRQ2. But it looks like I was wrong. KFLDRL is lineal. 20% = 20%, 95% = 95% etc.
Another problem is ME7 Logger. I can’t connect it to the car. The echo test is ok, then slow init and nothing. I use genuine VCDS. So I have no chance to find out what’s happening with P, I, D separately.
Any help would be appreciated.

http://nefariousmotorsports.com/forum/index.php?topic=12352.0title=

You're not going to be able to do PID tuning w/o me7logger.

Because VAG COM is too slow?
I tried ME7Logger on another laptop and got the same problem: slow init 11 and no connection.

Because you can't log any of the PID variables.
Also, KFLDIMX is not a WGDC table, it's I limit...

Ok, thanks.
I don't know why ME7Logger could not connect. Maybe the ECU address is not 0x11?

I've just read the thread
http://nefariousmotorsports.com/forum/index.php?topic=12466.0title= (http://nefariousmotorsports.com/forum/index.php?topic=12466.0title=)

So I'm gonna try this way today.

If this is ME7.1 you should have no k line issues unless you have an aftermarket radio on the kline.

I'd try different VCDS drivers, in particular the VCP driver, and make sure boot intelligent mode is off. This is all mentioned in the various README and you didn't mention if you tried them.

and try slow 0x00 for the proper 5 baud init, can also try to pull dash fuse in conjunction.

Next time please note the P/N

i see it is 4z but please put it in the topic at least. I had to download your rar and unrar it to figure it out.

Thanks to everyone, but now I just can't connect at all, because of ftd2xx.dll
I posted it here
http://nefariousmotorsports.com/forum/index.php?topic=837.480

The dll should come with the standard ftdi driver

Maybe it's a stupid question, but where can I get the standard ftdi driver?

I've solved it. I copied ftd2xx.dll to Wow64 folder (not System32),  because Windows 64bit.
While ignition is turned on, me7logger can be connected as well. (Slow init 0x00)
Now I have another problem. When the engine is started, the logger can't be connected to the car. I attached the screenshot.

Should I pull the fuse?

Connect before starting car and/or try pulling dash fuse.

I've tried to connect before starting, but after starting the engine it throws me error os_sendbuf(len=3, data= 01 B7 B8)
And TCU goes in limp mode.

Will try pulling dash fuse. Thanks!

I finally connected the logger.
First I connected Nefmoto flasher. It opened 0x01, then 0x11 session. I closed nefmoto (it was still connected) and connected the logger at the same baudrate as nefmoto (125000, 0x11).

I think ME7Logger does not open one more session or something like that. Nefmoto does.

you connected nefmoto while engine ruining?

No, while ignition was turned on, then logger, then I started the engine.

I have that problem on friends TT 512 kb ECU. While ignition on i can conncet. When engine is runming I can't connect. Vcds lite, nefmoto, me7loger no one of this won't connect while engine is running.  (Vcds 11 can connect)
I try to pull fuses from dashboard,ABS, navigation unit. Still no luck

Run direct K-line from OBD - Ecu.
It will always connect.

Try another baud rate. For example 9600 nefmoto, then 10400 ME7Logger. 

Here is my log. Now I know that P-component is pretty weird... at least for me.

P-Anteil: ( LDRQ0DY ( bzw. LDRQ0S ) - KFLDRQ2 ( bzw. 0 ) ) * lde = ldptv

What did I miss? Please give me a hint.

That isn't a log, thats an utterly useless screen shot.

The question is not about the log, but about P-component.

Anyway here is another problem with the hardware (underboost), so first I have to fix it.

We can't use that log to find problem, put CSV file so the users can view it with ECUxplot

Thank you all for the help, but N75 was dead, so the log is corrupted. I'm gonna log it one more time tomorrow.

Here is the log. Please take a look.
Maybe I'm wrong but the problem starts between 2800 - 3100RPM. The boost goes up from 2000mb to 2400mbar and it takes only 0.3sec

Strange turbos... 0.3 bar at 2000RPM... So first I would like to set LDRXN according to this. In that case lde will be closer to 0.
And also I'm going to set DC less started from 2000RPM, so it has more time to reduce boost.
 

i see 2 probs here:
1 boost cannot be controlled after 6k
2 pid


get a pressure test wg lines. check for leaks, actuator rod moving etc. probably one of them faulty
check n75 in another car

log it with TVLDMX = 0 and ldrxn ~180
if you see boost goes high after 6k with  then probably wg hole should be ported

as second
did you flat KFLDRL? k03 wont work good with that
is it stock springs in actuators used?
cap DIMX @3k ~~~40%
raise Q2
play with Q1ST

Your IMX is a mess during spool. Bring it down significantly. It should be flat until you reach desired boost

Thanks, gonna test it tomorrow.
But the spool is very weird, in my opinion. I attached another VCDS log (70% DC), that I've made before.

N75 is new. I'm pretty sure it's because of PID. But it's because of the pressure can't be dropped down in a short period of time. Like a Chinese Turbo with restricted WG port.

The spool is not lineal at all. When DC is 95% it goes like
RPM  2100  2400 2800 3100 
Mbar 1300 1500 1900  2800

That's why N75 should start reducing DC from at least 2400RPM. This is my theory and I'm gonna check it tomorrow.
I've raised Q2 magnificently and brought Q0 and IMX down. I hope there will be no oscillations.

Don't touch any of the Q params until you have an IMX that makes sense. You're wasting your time adjusting more than one thing at once.

Looks like I've found the problem) WG coudn't be fully open due to poor adjustment.  

But now I have another problem. I can't request more than 200% of rlsol and rlmax at middle RPM. The requested load goes down from 2000RPM until 4200RPM and then rises up again.


IRL/IOP are ok, LDRXN was set to 230%, KFLDHBN 2.55 KFPED 100%

What did I miss? Please give me a hint.

KFLDHBN limiting you load, but that is good beacuse you expect 1.5 boost at red line with K04?

How can this be if I set KFLDHBN to 2.6?

1.5bar is for test only. PID is currently disabled. 

you have to options, to read how ME7 convert load to boost and get answer to you question.
Or set that whole table to lets say 2.9-3.0 and dont think about it

Thanx, I set up it to 3 and now rlsol is 205 and boost is about 1.4bar)

I set 4 and the same load 205. I'm pretty sure there is another limit.

Post log again

Attached

Now you get rid of ldrlts
But how your LDRXN values looks like?

Here it is. Also I attached the files above.

Please note, I set CWMDAPP to 8, so PID is disabled now.

Maybe to high IAT or knock will give you smaller values to rlmax_w. I never goo too deep in that conversion rlmx to rlmax. 
Page 855 in FR maybe can give you a answer

Maybe the reason is TCU from ABT? I did some 4z7 files with MT and never had any problem up to 2.0-2.1bar...

No one knows? I've just tried to flash 551R instead of 551N and got the same problem.

LDRXN
KFMIRL/KFMIOP
KFLDHBN

Are there any other limits?
Is it possible that TCU limits RL?

Ditch CWMDAPP it may have load limit side effects I haven't traced.

Also log milsol and misopl1 if possible.

I already set CWMDAPP to 0 but nothing changed. Now PID works just fine, but I can't control the requested boost.

Ok, I will, thanks.

Please post logs.

On ZF5HP I've only ever torque limiters in the RS6 gearbox.

But hey, read out your trans...

I would like to start it from scratch.

I changed only KFLDRL and KFLDIMX. Other N75 maps are fully stock. Now specified and actual pressures are pretty close, but the turbos spool very slow and there are overshoots while gear shifting.
The question is how to make it spool faster? Should I raise IMX? 

Yes.

Like this?

That makes very little sense.

Would you please be more specific? :)
Please take a look. I changed the axis.
 

Why is it linear? Are you intending to use precontrol?

Yes, I attached KFLDRL one more time.
And I have overshoots here.

 

Something is very wrong, since drl isn't giving you even remotely the dc you need.

May I ask you, what is exactly wrong? 

Seriously?

You're about 20-30 short on dc at the end of spool. How on earth did you get DRL that wrong?