Hi,

In this topic I will humbly share my work on the software I am trying to build for my 2.0 TFSI Seat Leon (240Hp).
And hopefully get some help/advices from you guys.  
Please consider I am a noob with this ECU and be gentle with me lol, the followings posts might be full of mistakes, I've only done one tuning so far on these ECUs, with a lot of help and didn't fully understand the modifications we made at that time I'll admit.
So this time I am keen to learn and understand to improve myself.

My first target is to make a correct "stage 1" tuning to reach around 300hp. Later I will probably install a downpipe, and direct CAI (such as Neuspeed/CTS ones) and reach for a “stage 2” software. But first things firsts : the basic stock hardware software.
I already built my map pack and began to tune the maps I thought were needed. I didn’t flash anything yet.

Please note that the car is fully stock from a hardware pov so far.

I will mark my questions like this "1)" "2)" etc. But I am also really not sure if I modified correctly the maps, so any comment really appreciated too of course  

1) In my mod, I target 192 load, don’t really know if this is a good target to reach the 300 hp though?


So here are the modifications I made. :


KFMIOP :

2) I modified only the second KFMIOP since the first one is, I think, for stratified mode and therefore not used.. is that correct?

KFMIRL :


LDRXN1 :

3-a) I modified only the first of the 3 LDRXN maps I have, if I understood correctly, only one is used, and if not the first one I will try the second then third, do I proceed the right way?

KFDHLBN :


LDPBN :


LAMFA 1:

3-b) Same as LDRXN, only first version modified.

KFLBTS1, a little richer :

3-c) Same, I modified only 1st version of the map

KFFLDBTS, I kept stock:

4) Should I also modify the KFFLDBTS for lambts ? Or only KFLBTS is needed ? When I see lambts = KFLBTS + [KF]DLBTS*KFFDLBTS, I am not sure if KLBTS is enough…

KFLDIMX

5)  I reduced the values around the rpm where I expect an overshoot from turbo pressure, but maybe did it the wrong way..? :

KLMIMAX_UM, and KLMZUMN_UM

6) I have seen in various mods, people modifying KLMIMAX_UM, and KLMZUMN_UM, but I don't understand why we need to tune those
Can someone explain to me how they cap something and need to be altered?
If I understood correctly, they cap the torque, at list for KLMIMAX_UM, this one maybe I should set to 99% like above? but for KLMZUMN_UM I admit I am a bit lost…


7) Last question, at least for now  , if I modify my NMAX singles to let’s say 7000 rpm, should I rescale rpm axis in the different maps ??

Thank you all for your help

Hi,

Good to know
Please find my original file here : http://nefariousmotorsports.com/forum/index.php?topic=15360.0
Also, do you have a topic for your project too? I am very interested in seeing your work, maybe we could both improve ourselves throughout our respective work.

And btw, when you say "tune it like you",I don't really know what you mean, however don't forget I am a beginner   and my tune has never been tested, and is probably not the good example...
This thread is mainly to get feedback from the experts around here,  improve my self and the software before I test it out. There are probably much more reliable topics and software in this forum. However it is also of course to share my "little" work as a beginner and if it can help others, I am glad !

Hello gman86,
Thank you for your answer!
Do you mean I did something wrong and so I will have too much knock and EGT ? Or it is the way it is supposed to be when tuning?
I understand it will mainly use lambts yes from the different topics I've read here. Is that something that we can and have to avoid ? If yes, how?
Or is it okay that Lamfa will not be really used and use mainly lambts instead?

Also as mentionned on  my question n° 4, I don't know if I did enough modifications for lambts? I modified only KFLBTS, is that enough?
Or should I also modify the KFFLDBTS for lambts ?

Thanks for your help

Hi prj,

Okay... I completely admit I am not an expert, far from it..    

However can you please be a little bit more specific on what I did wrong or what pointed out my lack of understanding ? You are talking about LAMFA/KFLBTS I guess ?
Since I didn't touch much other things for fueling so far... Anyway I am here to learn and improve my understanding so if you could point to the right direction so that I can understand and learn to correct my mistakes, it would be great !  

Is it the 0,88/0,86 ratio in lamfa which is not correct? Maybe not rich enough ? And/Or the KFLBTS values (0,87/0,84) not rich enough? Or/and not different enough from the Lamfa values? Or is it that I didn't modify the right areas of the maps? Or none of the above?  

My understanding is the following : I enriched a little bit LAMFA values vs LAMFA stock values for high torque requests to do a "pre enrichment" and avoid EGT triggering KFLBTS too early (avoid EGT to go over TABGBTS threshold too soon and trigger BTS). Then I made KFLBTS a little richer than LAMFA because I thought that the component protection should be a little bit richer in order to lower the EGT when they are too high... but maybe I am wrong?
Also as mentionned and you are right, I haven't yet figured out how to properly scale lambts. And I modified only KFLBTS map, but maybe I would need to modify other maps involved in the lambts calculation like DLBTS or KFFDLBTS which I have kept stock for now?

Anyway thank you for your reply, if you have any good examples of what I should have done instead, or any tips,  I would really appreciate your help.  

Ok thanks Nyet, I will reset to stock those maps then. The rest of my mod is ok? Can I flash it like this without risks (with only IRL/IOP/LDRXN/KFLDHBN/LDPBN modified like I did) ?

Also I will keep looking how works the fueling with LAMFA / BTS for eGT / and lambda for knock protection too. Seems to be a harsh topic !  

Oh okay, I thought some modifications would be needed on the lambda for a stage 1, but if not, it is really fine haha.

Here are the logs I did with stock ECU, everything looks fine to me except maybe a the little delay on cylinders 3 and 4 (coil or sparks maybe?), but I am no expert, so if you see something please say so .

And if everything looks fine + my mod with fueling reset to stock too, I will try to flash it and log this week end 

Thanks

If you mean disassemble the dump to see what version of ldrxn is used etc then yes, I have never done it...and it is still very obscur to me.. but if not too complex for a noob I will look into it.

Any feedback on my stock logs and other questions?

 ...So according to you, I am a lost cause because I am no expert on every process involved on an ICE? I admit it is better when knowing everything involved, sure, but I thought for a basic stage 1 tune, I would not need to be an expert on front flames speed and so on for instance . The more you know the better, no argue there, don't misunderstand my point.

Also, what's the use of this forum then? It is only for combustion doctors and experts? And not for experts like you to guide the beginners motivated to learn?  
I thought we came here to share, learn...

Also, as far as I know, I didn't came here to ask for a premade tune or so; I am respectful, spending a lot of time to understand as much as I can, post as detailed information as I can etc. I am working on my side and willing to learn, but came here because indeed, I need some help.

Eventually, I didn't say I will flash my car with random values, and then test it out. I'm not totally stupid...
I share here what I think might be ok, mainly to be sure before flashing that I don't take any risk, and because I know that I may have made mistakes... but that's the point.
It's ok for you to say that I don't understand things, and should try to improve my knowledge on engines and combustion, but just doing it without helping, I don't see the added value.

Cheers and peace anyway, no hard feelings. And thanks for the warning at least

EDIT : thanks for the last part you edited on your post, much more helpful, I wish you were still a little more specific, but that does make a start


 Ok, but that does raise questions on my side, I guess you won't be willing to elaborate and that's ok, but still ask though


1.  I did extrapolate KFMIOP axis, and put IRL reverse to IOP, I thought it was ok from what I read around, can you please be a little more specific on what is wrong ?
2. You are right, I will try to make it more close to the flow map
3. I know from your last post, but don't really know in what way it is so wrong, I will keep looking...thanks
4. I did touch KFLDIMX, you are talking of another map? KFLDRL should be modified ?
5.  Ok thank you very much for this information
6. S You mean 192 load is too much from the HPFP? Or only in certain RPM areas, it won't be able to reach what I ask ?

"Basically of all the stuff you posted the only changes I agree with is moving LDPBN out of the way." ==> Ok that is one thing right

Thank you prj, sorry for my initial post