So for the past few days I was going through whole MSF module and found few interesting things. One of them is ability to completely forget KFZWOP map and all ignition angle / torque interventions due to this map.

Basically everything starts in MDBAS. There is only one map that will skip delta corrections between kfzw and kfzwop: ETADZW = 100%. After setting this map to 100% everywhere we are almost done. You can check every single place in FR where ETADZW is used and you will find out that ETADZW is only where zwopt is: MDIST, ZWMIN, LAMBTS.

• In MDIST we check etazwist variable.
• In ZWMIN we check etazwmn variable.
• In LAMBTS we check what happens with detazwbs variable.

OUTCOMES:
etazwist:::
1. in ATM becomes etazwimt
2. in LAMBTS becoms etazwim
3. in DTEV disables KFDETATE correction
4. in DTEV skips check with ETAZWTEN and allows diagnostics of Tank Ventilation.

etazwimt:::
1. in ATM disables KFATMZW correction
2. in ATM disables KLATMZWE correction
3. in ATM disables KLATMIZWE correction
4. in ATM disables KFATZWK correction

etazwim:::
1. in LAMBTS disables KFDLBTS correction (etazwg - etazwim = 100% - 100% = 0%)

etazwmn:::
1. in MDKOL disables mifa_w correction
2. in MDZUL disables miszul_w correction
3. in MDRED disables miopt_w correction

Now one last thing left to do is to check MDZW (there's one instance of zwopt variable). zwopt-dzws = zwsol. zwsol is found only in ZUE and this variable can be ignored by setting b_zwappl = 1 (CWMDAPP.0 = 1 in PROKONAL).

For confirmation we can now search for etazwb (MDKOG: etazwb * miopt_w), etazwbm (MDKOL: multiplier of 1; MDZUL: miszullbw * etazwbm), etatrmn instances. Everything works out perfectly and it doesn't seem to be some kind of hack, but just alteration of mechanism Anyways, if this helps someone then please chime in and tell your results

Seriously?

zwopt is not a problem in any way. You are disabling all failsafes for ignition angle efficiency. Unless you are running retarded timing or lots of KR retard then it won't intervene. If anything fudge things slightly.

Have you looked at all of the conditions for fast path torque intervention? You are completely disabling it.

Spend a little time tuning and ME7 won't intervene.

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Good luck driving the car L O L

instead of turning everything off, how about you try understanding it all and figuring out where the interventions are / would be occurring.

nehalem, I personally have tuned my car with everything enabled, but now I want to disable some things that I do not need and check if everything will still be ok for my future projects (simplify some things that without special automotive gear I can't test). Both KFZWOP/2 maps we have to rescale each time KFMIOP load axis is changed, but in reality you can't rescale axis beyond it's origin correctly. What I mean is if originally it was 140 and you set last cell to 200 then difference between these two in table values you can only guess (semi-linearize) by previous cell, for example 135. Then you create coefficients and use that difference on all table cells that exceed 140 load. But no one can tell for sure what optimal ignition angle is at bigger loads without testing it (and in reality how would we test it with knock stopping us?). I think it isn't worst thing to disable this. After all KFZW/2 maps will regulate ignition (with some multiplying maps I suppose), right?

I can't say for the 1.8t, but for the 2.7t - I've found the RS4 KFZWOP/2 to be an improvement.  They are the same cylinder head.  How about comparing the diff between the 150hp, 180hp, and 225hp 1.8t maps?

I think there's some misunderstanding about KFZWOP.

This map does NOT need to be tuned. These maps are used to evalute degraded ignition angle. It's the difference between desired ignition angle and optimal ignition angle that matters. This allows ME7 to respond to too retarded ignition angles.

Rescale the axis if you must and interpolate/extrapolate original values. Done.

No, it is used to determine ignition angle efficiency and is the basis for all of the failsafes reacting to it (i.e. ignition angle too retarded - dump fuel to combat rising EGT's).

If your spark timing is even close, then there won't be any intervention.

Edit: I should also mention that it is the base for ignition angle from torque intervention, which you are disabling. Your are effectively disabling 75% of the torque model. I suggest you take a hard look at MDKOG which triggers torque intervention in ZUE via MDZW.