NefMoto

Hi nefmoto community

Edit: Now problem is changed boost cut is gone, Trying to calibrate car for hybrid setup.

I trying to learn how to tune my car. I used s4wiki and forums wiki for learning. Still learning and searching. First I want to explain my car's setup

LCR 1.8T 2004 Bam Me7.5 Ecu

Setup:
k04-23 hybrid - fmic - cai - complete exhaust - upgraded wastegate
I have aem wideband and analog boost controller.

n75-n249-sai-evap-vvt deleted. Boost is controlled by electronic boost controller.

I started to tune slowly, but I'm stuck at this point.

Problem:
Until 5800rpm everything is fine car has 1.1 bar boost. Between 5800-6100 rpm boost  drops 0.7 bar until redline.

Tuning file and short log is attached below, any help is appreciated.  :)

Remove EBC, re-fit N75. If you value turbo health and transient response, re-fit N249.
Learn to make logs with ME7Logger or VehiCAL logger.

Please obey forum rules or this post will be deleted

https://nefariousmotorsports.com/forum/index.php?topic=12361.0title=

I will have better logs in shortest time possible.

Finally I figured it out how to log with me7logger, really impressed by speed and features

Still having issue about boost cut after 5000 rpm , Drops 0.8 from 1.35 , Its same with/without n75.

I want to note that car has aftermarket wastegate. With n75 this file gives 1.5 bar boost than dropping 0.8 in 5000rpm, without n75 Its between 1.35 to 0.8. Other details of setup explained in first message

I'm trying to do my own file, previously buyed files are crap. Any help is appreciated,  Thanks for support.  :)

Tuning file, xdf and my logs on 3rd and 4rd gear attached below

start from the scratch
put ecu in applications mode
force 0% wgdc
make your car request more boost than it is in actual, it would be the best if it was higher than final boost
if you have changed your fueling or maf then tune it with 0% wgdc
do wgdc linearization runs
then make your boost request back to normal
then fine tune fuel, do ignition and go ahead

ps. won't work if you have any mechanical faults or your pressure gonna exceed 2550 mbar

Thanks for inspiration  @ratosluaf

New logs with new file, and softer wg spring.

I don't want to exceed 1.5 bar, 1.4-1.3 bar peak and 1.3 bar continious boost until redline is fine for me. Specially when we consider Its k04-23 hybrid.

With this file boost is steady 0.85-0.9 and specified boost almost never exceeds requested boost


KFLDMIX and KFLDRL maps are okey for daily use, turbo is not surging at low rpms, car is drivable. So expect wot (not enough boost), I'm okey with how n75 works.

My question is, which map I need to adjust to have 1.4 peak and 1.3 cont boost. Do I need to increase KFLDMIX & KFLDRL or LDRXN or just something else?

KFLDMIX - KFLDRL - LDRXN - KFMIRL maps , ecu file, xdf, 4th gear wot log (me7logger) this are all attached below

Thanks for helping

Your question was answered in previous post. You just do not like the answer.

There's also this sticky:
http://nefariousmotorsports.com/forum/index.php?topic=12352.0title= (http://nefariousmotorsports.com/forum/index.php?topic=12352.0title=)

Start reading.

I appreciate answers, I'm reading all over again, again, again. From s4 wiki, definitions from nyet's website, stickies on forum. The thing I'm stuck is, I'm not sure where to start for calibrating I'm not %100 understanded logic of me 7.5 yet, So I want to make small changes even I need to make 20 flashes. But not sure where to start for increasing boost now

I'm more confident about timing and afr they are more easy to watch thanks to aem wideband and obd gauge, so I can adjust them depend on boost change. But not sure lets say now Its flat 0.9  bar, How can make It %10 more boost.

When I tried to have 210 load after 4000rpm on ldrxn, car goes limp mode again after 5k rpm

Thanks for helping

The section from s4tuning wiki with "Boost (rlsol) intervention via rlmax" should help to understand how the ecu works.

It's probably related to KFMIRL and KFMIOP. I've got similar problems, in the end I had to tune these two maps (loosen?) so it doesn't trigger the limp mode conditions.
I'm not sure though.

There is never any need for them to be anything other than the mathematical inverse.
This is straight up bad advice.

I was referring to the max value in KFMIRL and the load axis in KFMIOP.
If the value required in KFMIRL is too small for example, 170 on 99% torque request, ECU will go into limp mode at some conditions, although, the two maps are perfectly inversed.
It's just an example how KFMIRL relates to limp mode.

This is completely wrong.
Having KFMIRL/KFMIOP end at a certain value just limits the max spec load to this value, nothing more, nothing less.

More misinformation.

If you had limp mode it was because your boost pid was not tuned correctly and you were overboosting with a lower load limit.

After few logs and 4-5 files, Now I'm getting my target boost levels

Since Its k04-23 hybrid, I planning to run 1.4 peak and 1.2-1.1 bar boost until redline. Getting closer to my target. Everytime I just made small adjusments to file make sure everything is fine.

This is latest log, car is not going limp mode anymore, still empty under 4k rpm, once I bend the rods, trying to be more careful with tightened wastegate :)

Weather is pretty hot here today 20c celcius, and this is 3rd run. There is some retard I think Its related to high iat but other than that It feels solid.

Csv is attached below

Thanks for helping

I fixed between 3500-6000 rpm's now problem is boost drops after 6k rpm,

Car doesn't feel powerful with extra boost levels.. Tried to adjust ldrxn on higher rpms to request more boost but Its getting limp mode again even with %5 changes.

Attached log is while having 100-200 run starting from 4th gear, Its 21.4sec -%1 slope

File, xdf and log attached below. Any help is appreciated.

On the 1st of february you posted funny pictures of ldrl and dimx totally modified.
Have you actually read what prj suggested to do?

your boost request is following your load request just fine.

start from scratch without making unneccessary changes to the file.

Start from scratch

change only last row of iop to make a ~95% torque request, raise irl last row(s) to inverse iop with target at ~220%, change iop axis to reflect irl changes, no need weirdo peacks here



imx/drl fucked up completely

0 make torque safety cap with kfzw/2 180+%@3000 to prevent rods failure, thats already done just nail it
1 fill HBN with 2.0s to limit charge pressure to 1 bar, optionally ff NDLDRAPU to avoid underboost dtc
2 fill drl with zeros or unplug n75 connector
3 go get base boost
4 reflect base boost with KFVPDKSE axis as described in wiki (if its CWPLGU = 1)
5 reset drl to stock. you can limit 95% row at the 3000 area with some lower values, yes its stupid (say hi to some tuners  ;D) but no worries for a novice, personally i prefer more linear drl all over the map for a hybrid turbos
6 reset imx to stock, change axis to cover up to 1500 mbar boost, copy column of 3000 and paste it to higher rpms. lower values at high rpm at the rows near the base boost 
7 get logs, change imx axis/rows to get pretty flat 1 bar boost curve as the base. made a few pulls as usual from 1500 rpms and a few from 4000 as its different story
8 limit with hbn to 2.2 , and so on (and vice versa with lower boost settings - check 1.6, 1.8 also)

and only when youre able to run with any request boost wo issues, only then limit it as you wish with ldrxn or hbn

btw you didnt want some peak with hybrid as its capable to hold all the way to redline just keep an eye to fueling/timing

At the end we figured it out car warping intake pipe, which is installed by old owner. I replaced It with oem. Car is working perfectly fine

Added +5 Timing advance. Installed wmi, Maximum -1.5 retard 
1.3 peak 1.1 cont until 7000rpm , 17.8s (-1%) 100-200 time recorded. I think Its not bad for car that 18'' cupra wheels and brembo brakes.

Next goal is having 1.3 continious boost, maybe I will have less timing. Let see where It goes.

What is your opinions about afr, I'm targetting 11.8 most of time, Is It worth to try 12.2. What is best afr on your experiences.

I'm not an expert, but it's better to set the ignition so that the ECU does not reverse the ignition, knocking can be reduced by enriching the AFR, but cold air works best.

Now running 1.4 peak 1.3 cont boost timing is 21 degrees at last column, 100-200 time is 16.3s

Depend on outside tempereture, there is ignition retard between -1.5 to -3 , I will change methanol nozzle 300 to 500cc to see If that helps

Otherrwise, decrease timing and giving a bit more boost. But I don't want to past 1.5 bar with this turbo. With current boost peak maf value is 237g/s

After having logs this all ignition retards makes me want to check injector duty,

After 5500rpm Its going more than %100

So I decided to change stock bam injectors to 0280 156 280 450cc injectors which I already have as a spare part

Tvub is changed according to post https://nefariousmotorsports.com/forum/index.php?topic=1863.0

KRKTE is changed according to hammersword's krkte calculator.

Expect fuel consumption display correction, do I need anything to change before trying car with new injectors?