MAF Scaling - Open/Closed Loop Fueling info

[cawith]

Originally Posted by freerunner

Yeah, it's a bug in vgitool for everyone whose system locale is not English.

If you want to keep your currently used system locale settings, you can use per-app locale setting as a workaround:

Edit your run.bat. After javaw.exe add two variables:

-Duser.language=en -Duser.country=us

If you're using Romraider, you'll want to run it like that, too. Else you might not be able to copy&paste table values.

Originally Posted by steve99

yes change the ol/cl voltage to 3.2 not 32


the min load is probably ok at 0.2 but you could try 0.1

Thanks, guys. I just changed to English settings, that fixed it

@steve99 , at idle LTFT is usually 0% or sometimes 0.78%, so I guess it would be fine just to leave minimum load at 0.2.

I understand that while doing the highway logs I should try to keep the throttle as steady as possible or keep a very mild acceleration between 100 and 140 km/h, but for city driving I can't stop logging for every time I have to stop at a light or need to brake. Is that acceptable? I guess all the irrelevant data will be removed as the ECU goes in too OL on deceleration..?

[steve99]

Originally Posted by cawith

Thanks, guys. I just changed to English settings, that fixed it

@steve99 , at idle LTFT is usually 0% or sometimes 0.78%, so I guess it would be fine just to leave minimum load at 0.2.

I understand that while doing the highway logs I should try to keep the throttle as steady as possible or keep a very mild acceleration between 100 and 140 km/h, but for city driving I can't stop logging for every time I have to stop at a light or need to brake. Is that acceptable? I guess all the irrelevant data will be removed as the ECU goes in too OL on deceleration..?

It ok to stop and start, but you just dont want to be in heavy traffic where intake temps will change significantly. or sitting idling for long periods.

just drive smooth , mild acceleration, your just trying to get as much closed loop time as possible at varing rpm, just dont drive like racer X and you will be fine.

[cawith]

Originally Posted by steve99

It ok to stop and start, but you just dont want to be in heavy traffic where intake temps will change significantly. or sitting idling for long periods.

just drive smooth , mild acceleration, your just trying to get as much closed loop time as possible at varing rpm, just dont drive like racer X and you will be fine.

Okay, thanks for clarifying!

Regarding the 15 minutes driving around a car park, would you say that should be with stop & go, or should I try to keep the clutch engaged at all times and just drive around at low rpm in both 1st and 2nd gear?

[steve99]

Originally Posted by cawith

Okay, thanks for clarifying!

Regarding the 15 minutes driving around a car park, would you say that should be with stop & go, or should I try to keep the clutch engaged at all times and just drive around at low rpm in both 1st and 2nd gear?

Nah no need to do that stuff

just do 15 mins or so normal driving then 10 on the highway or open road, or some backroads where you can do 100k or so legally

[freerunner]

In addition to that, I always do some closed-loop runs with low load at higher rpms.
Cruise-control driving for a bit of time with 4.0k, 4.5k, 5.0k, 5.5k,6.0k on the highway/autobahn.
Very helpful for nailing down your 3v/3.2v maf value, since it should be calibrated in close loop.
If you've done this properly, you will have a good base for applying load limits when calibrating open-loop.

[Ondreiko]

Guys!
I seem scald my maf as the car drives much better now than before, but:
there is the spike of AFR at 3800 rpm.
http://datazap.me/u/ondreiko/1007-wot?log=0&data=1-6-11

My load engine table is as follows:
800.0 1000.0 2000.0 2200.0 2400.0 2500.0 3000.0 3800.0 4000.0
1.00000006144 1.00000006144 1.00000006144 1.00000006144 1.07000738996 1.1099854197599999 1.09997565352 0.9500122653999999 1.40002450008

as it was proposed by Wayno.
What do you suggest me to do in order to eliminate that spike (FLKC = 0 and IAM = 1 at that point anyway) and do i need it as the car drives very good (comparing to the same before i did MAF scaling).
Sorry for bothering stupid questions of the dumb guy, but i seem to be not in charge to find the right way myself at this point and need your kind guidance.
It is OFT/OFH setup and front pipe is catless as well

Thank you in advance,

PS: i've read the entire thread from beginning to the end but still need guidance. sorry again

[Wayno]

Just raise the 3800 value to 1.

[Ondreiko]

Originally Posted by Wayno

Just raise the 3800 value to 1.

Thank you, man, will upgrade and see what happens

[Ondreiko]

Guys,
Does this one look right now?
http://datazap.me/u/ondreiko/v1008-w...=0&data=1-6-11
i changed engine load limits at 3800 RPMs by +0.5 and it looks better now.
Should i leave it as is or does it need further tweaking (of what)?
Here is another log of the same day,
http://datazap.me/u/ondreiko/v1008-w...=1&data=1-6-11
but there was bit less flat surface in second case.

[freerunner]

Looks better. Should be safe for now.
If you're certain that your mafv 3.20Via cell has been calibrated correcty in closed-loop, try raising load-limit for 3800 rpm slighly further and see if it gets better. Else adapt scaling value for 3.20V (increase slightly so more fuel is added).
This will probably set scaling off for mafv >= 3.44V

Make one change a time and examine what happens.
Will take some time and trial and error to get everything perfect.

[Wayno]

Looks fine

[Dru670]

Originally Posted by steve99

Nah no need to do that stuff

just do 15 mins or so normal driving then 10 on the highway or open road, or some backroads where you can do 100k or so legally

do you put the city driving and highway driving logs together in the Closed Loop in the MAF Scaling app?

[steve99]

Originally Posted by Dru670

do you put the city driving and highway driving logs together in the Closed Loop in the MAF Scaling app?

yes you can put it all in one log the maf scaling utility will sort it out.

[Dru670]

Originally Posted by steve99

yes you can put it all in one log the maf scaling utility will sort it out.

Ah okay thanks. Is there anything else that must be done after scaling the MAF? Also, if I wanted to rescale the MAF again do I load the previous ots rom and log my drive and scale maf or do I use the current rom with the newly scaled MAF and log and adjust that one? Sorry just not sure because one instruction says to log tons and tons of data and repeat while another says just do 15 min normal and 10 highway 2-3 WOT and done.