|
|
|
prj
|
 |
« Reply #1 on: May 30, 2012, 02:33:20 AM »
|
|
|
Logged it some more and my mifa_w is at 82%.
Something is limiting requested torque.
I will add mrfa_w to the log and see what's going on there.
|
|
|
|
|
Logged
|
|
|
|
|
prj
|
|
« Reply #2 on: May 30, 2012, 03:06:18 AM »
|
|
|
I think my problem is KFMIOP. I need to rescale the axis. According to this, with SY_TURBO=1 and FMIVL=1, the value read from KFMIOP based on rlmax_w and nmot_w becomes mimax_w.  If I now look at this:  I see that mrfa_w is multiplied by mimax_w. So it seems that the only correct way to tune KFMIOP is to rescale the axis. The purpose of KFMIOP seems not only to tell the ECU where requested torque is reached, but it is also the hard limit for driver requested torque... Will try it and see  Of course the KFMIOP axis is also used by KFZWOP and KFZWOP2, but I guess nothing will blow up too much if I rescale the last 3 columns or so. |
|
|
|
« Last Edit: May 30, 2012, 03:09:38 AM by prj »
|
Logged
|
|
|
|
|
prj
|
|
« Reply #3 on: May 31, 2012, 12:20:12 AM »
|
|
|
Yup, this fixed it.
|
|
|
|
|
Logged
|
|
|
|
@lq!
Full Member
Karma: +2/-0
 Offline
Posts: 62
|
|
« Reply #4 on: May 31, 2012, 12:32:45 AM »
|
|
|
Thank you for your sharing.
Good Job !
|
|
|
|
|
Logged
|
|
|
|
|
s5fourdoor
|
|
« Reply #5 on: May 31, 2012, 12:52:26 AM »
|
|
|
Please post the updated maps with logs.
|
|
|
|
|
Logged
|
|
|
|
|
prj
|
|
« Reply #6 on: May 31, 2012, 04:02:13 AM »
|
|
|
I am still tuning timing and boost linearization.
But this is what I have now...
The log was done with a slightly lower KFMIRL (230, now 235) and I rescaled KFMIOP from 225 in last column to 232 since then.
Anyway, I am getting pretty close.
|
|
|
|
« Last Edit: May 31, 2012, 04:05:10 AM by prj »
|
Logged
|
|
|
|
|
prj
|
|
« Reply #7 on: May 31, 2012, 04:13:20 AM »
|
|
|
This is what I used to calculate my KFMIOP, it matches the existing (stock) values in the table quite well...
|
|
|
|
« Last Edit: May 31, 2012, 04:14:57 AM by prj »
|
Logged
|
|
|
|
|
prj
|
|
« Reply #8 on: May 31, 2012, 05:35:11 AM »
|
|
|
No comments?  |
|
|
|
|
Logged
|
|
|
|
|
s5fourdoor
|
|
« Reply #9 on: May 31, 2012, 10:54:29 AM »
|
|
|
Lots of comments. Can you please describe your engine setup? Can you also elaborate on what you did to convert your ECU to be RS4 compatible?
I know you did a chip conversion of some kind, but I only saw the desoldering thing.
|
|
|
|
|
Logged
|
|
|
|
|
prj
|
|
« Reply #10 on: May 31, 2012, 12:50:27 PM »
|
|
|
My car is mostly stock. The precats are gutted and a stronger clutch has been fitted, that's about it.  I guess the picture answers your question though |
|
|
|
|
Logged
|
|
|
|
|
prj
|
|
« Reply #11 on: May 31, 2012, 02:25:55 PM »
|
|
|
Another problem - my specified load is capped at about 218-219 from 3000 to 4000 rpm.
It follows ldrlts_w.
I don't really need more load for my car, but I want to understand if I am hitting a hard load limit here.
I attached the relevant section of the FR.
My KFLDHBN is plenty high.
I see that KFLDHBN and pu are both 8 bit values.
When they get multiplied, what happens to the result? Could I be hitting a FF limitation?
I'll try setting the KFLDHBN map to high values, and checking...
|
|
|
|
« Last Edit: May 31, 2012, 02:35:44 PM by prj »
|
Logged
|
|
|
|
|
prj
|
|
« Reply #12 on: May 31, 2012, 04:11:21 PM »
|
|
|
Ambient pressure was 1006 mbar, my KFLDHBN as is now is attached.
My logs are attached in a prior post....
I hit 2.461 request and stay there (DSLOFS was set to 0, but I've set it back now).
I honestly have NFI why I am hitting this limitation based on the FR.
I am guessing I have to start to disassemble this ECU. If only there was some information shared on that as well (descriptions and names of subroutines for example). I'm not scared of ASM, it just always takes so long to get into it...
Will FF KFLDHBN tomorrow, but I got a feeling it's not going to help.
Maybe I'm wrong and it will.
|
|
|
|
« Last Edit: May 31, 2012, 04:26:45 PM by prj »
|
Logged
|
|
|
|
|
prj
|
|
« Reply #13 on: June 01, 2012, 03:31:05 AM »
|
|
|
Ok, so rising KFLDHBN allows over 300 load into ldrlts_w, that is not a problem at all.
And now requested load can be adjusted at will.
However, plsol_w and pssol_w are still capped at 2461mbar. I can request 240 load or 215 load and plsol_w is still 2461.
So I guess I need to look at the boost calculation and see.
Because if I want to tune the car to produce in excess of the maximum measured boost pressure for some reason, then I need to be able to request FF boost.
|
|
|
|
|
Logged
|
|
|
|
|
prj
|
|
« Reply #14 on: June 01, 2012, 03:54:35 AM »
|
|
|
Here is my latest log.
You can see how req boost is just capped, and then there is a sudden notch at cam changeover.
|
|
|
|
|
Logged
|
|
|
|
|
