NefMoto

Technical => Tuning => Topic started by: Lost on March 08, 2014, 01:19:08 AM



Title: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 01:19:08 AM
What is the relation between those maps?
Silentbob said that KFZWOP, KFZWOP2 maps are used for best Power.
Advance timing is eddited in KFZW,KFZW2.
My question is:
How do i relate those maps to each other.

The car is RS4 B5 - E85 - 551K box.



Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: ddillenger on March 08, 2014, 01:25:26 AM
KFZW is desired ignition angle.
KFZWOP is the ignition angle that would produce the most torque in that engine if you weren't knock limited.

Basically, the ecu looks at the current ignition angle, compares it to KFZWOP and determines what percent of possible torque the engine is producing.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: dream3R on March 08, 2014, 06:21:06 AM
KFZW is desired ignition angle.
KFZWOP is the ignition angle that would produce the most torque in that engine if you weren't knock limited.

Basically, the ecu looks at the current ignition angle, compares it to KFZWOP and determines what percent of possible torque the engine is producing.

Great explanation!


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 09:58:17 AM
KFZW is desired ignition angle.
KFZWOP is the ignition angle that would produce the most torque in that engine if you weren't knock limited.

Basically, the ecu looks at the current ignition angle, compares it to KFZWOP and determines what percent of possible torque the engine is producing.

Great, Thanx D.
Looking at logs, my actual timing has higher values, than all of those maps. I understand that depends on iats, pressure....
Does this mean that I have to edit my desired KFZW to get closer valuse to WOP?
What do I make of it?
I feel I need to ask those questions, bc I have been Reading alot and have not found any reasonable explanations.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: ddillenger on March 08, 2014, 10:04:50 AM
Honestly, your tuner know's what he's doing. It's unwise to think you understand someones work well enough to make modifications to it.

I'd probably start fresh if you're interested in these things :)


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 10:23:39 AM
Honestly, your tuner know's what he's doing. It's unwise to think you understand someones work well enough to make modifications to it.

I'd probably start fresh if you're interested in these things :)

Well, I`v said this Before:
Nobody remembers a chicken :)

Well I did sort my boost Control and nasty TC I had.
I do not have a tuner as I see it. The one that is newer answering, could not care less.
It is my car, trust me I am taking baby steps.
And if it brakes, F..k it. I just build better. I am not kind of guy that gets scared and backs off as soon it gets hard. I will learn this, trust me.
Besides, there is really not much material here on RS4, it benefits this forum


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: nyet on March 08, 2014, 10:47:19 AM
Besides, there is really not much material here on RS4, it benefits this forum

ALL of this applies to the rs4:

http://s4wiki.com/wiki/Tuning

Heck, this whole forum was started with the s4/rs4 in mind.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: phila_dot on March 08, 2014, 10:48:12 AM
KFZWOP(2) is only used in intervention and torque calculation. It is ignition angle for optimum torque at lambda 1.

These tables dont need to be touched unless you've converted to a different fuel.

Your logged zwout values exceed zwop values on pump fuel?



Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: ddillenger on March 08, 2014, 11:01:26 AM
For clarification, the OP is referring to an RS4 running E85 tuned by PRJ.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: phila_dot on March 08, 2014, 11:13:28 AM
For clarification, the OP is referring to an RS4 running E85 tuned by PRJ.

Definitely relevant information.

In general, my advice is to not worry about the ZWOP tables. If you experience undesirable intervention from poor ignition angle efficiency (won't happen in your case), then tune the intervention i.e. dlambts.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: prj on March 08, 2014, 01:35:18 PM
Touching KFZWOP is completely pointless on this car. It's not needed for pretty much anything, as the car always runs 100% angle efficiency anyway. There is never ever going to be a single knock event regardless.
I was sick with 39C fever for some time, thus I've got a little behind on my e-mail, but going through it and answering everything I omitted, so Kemo, don't be so pissed off and check your e-mail! :)

Boost overshoot on this car was due to leaks present when mapping, thus once they were fixed it overshot some. Still made 2.6 FATS though :)
It's running a 5120 RS4 and the car runs fine.


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: dream3R on March 08, 2014, 01:38:27 PM
Touching KFZWOP is completely pointless on this car. It's not needed for pretty much anything, as the car always runs 100% angle efficiency anyway. There is never ever going to be a single knock event regardless.
I was sick with 39C fever for some time, thus I've got a little behind on my e-mail, but going through it and answering everything I omitted, so Kemo, don't be so pissed off and check your e-mail! :)

Boost overshoot on this car was due to leaks present when mapping, thus once they were fixed it overshot some. Still made 2.6 FATS though :)
It's running a 5120 RS4 and the car runs fine.

Glad to hear you're feeling better :)


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 02:21:53 PM
Touching KFZWOP is completely pointless on this car. It's not needed for pretty much anything, as the car always runs 100% angle efficiency anyway. There is never ever going to be a single knock event regardless.
I was sick with 39C fever for some time, thus I've got a little behind on my e-mail, but going through it and answering everything I omitted, so Kemo, don't be so pissed off and check your e-mail! :)

Boost overshoot on this car was due to leaks present when mapping, thus once they were fixed it overshot some. Still made 2.6 FATS though :)
It's running a 5120 RS4 and the car runs fine.

Well, i am not pissed off at all - check your email.
This what i am doing has nothing to do with your work. Your job was done!

The car runs great and best recorded fats now is 2.45.
100-200 7.6 sec and i am not a fast gear shifter :)


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 02:29:58 PM
Definitely relevant information.

In general, my advice is to not worry about the ZWOP tables. If you experience undesirable intervention from poor ignition angle efficiency (won't happen in your case), then tune the intervention i.e. dlambts.

Did not touch ZWOP tables at all.
Made some slight changes in KFZW/2 after peak load up to top.
Just wanted to here what you guys have to say about this.
No intervention - nothing strange at all. The car rips as hell all the way.
There is more to get here :)


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: Lost on March 08, 2014, 02:41:30 PM
ALL of this applies to the rs4:

http://s4wiki.com/wiki/Tuning

Heck, this whole forum was started with the s4/rs4 in mind.

I have read Wiki like 30 times now. :). This is a very complex thing.

Well it is not the whole truth seeing it from a newbie perspektive.
I mean if you take an S4 551M box. There is straight forward tons of info and examples to read and follow and apply.
A lot of that can be used on Rs4 as well - if you know what your are looking for.
That is the problem being newbie. You dont know this!
What do you do?
You type in RS4 or 551K or something similar and search.
All the tables are not the same. There is not as much straight forward info.
I feel it is appropriate to ask all the questions.
There is allways some benefit of that even if it feels stupid for you regulars :).


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: jibberjive on March 15, 2014, 10:08:40 PM
So KFZWOP is essentially an MBT timing table, for gasoline, at lambda 1 (ie. the desired timing one would ideally want in a stock S4 if it was running Q16 or something).  So, with E85 having both a different stoichometric ratio, and peculiarities relating to combustion that affect the optimum ignition angle when compared to gas, why would KFZWOP not need to be touched when going E85?


Title: Re: KFZWOP, KFZWOP2 vs KFZW,KFZW2
Post by: prj on March 16, 2014, 09:19:36 AM
So KFZWOP is essentially an MBT timing table, for gasoline, at lambda 1 (ie. the desired timing one would ideally want in a stock S4 if it was running Q16 or something).  So, with E85 having both a different stoichometric ratio, and peculiarities relating to combustion that affect the optimum ignition angle when compared to gas, why would KFZWOP not need to be touched when going E85?

Because it is not used for anything apart from ignition angle efficiency calculation. The ignition angle is going to be always 100% efficient because there is no detonation on E85, at least on stock CR.
E85 also never needs BTS enrichment, because the EGT's are always very low, so this map is just not important. It does not do anything relevant to running the engine when on E85.