LTFT after Autove

[stevedarman]

Can anyone advise me I have done autove as per the tutorial then i did automaf
the same way the vehicle seem to run fine But when i turn on LTFT and closed loop to check LTFT they are all over the place any where from 0.05 up to 6.1
As i read they should be between -0.05 to 0.00 Where have i gone wrong

[mr.prick]

IMO you went wrong by using OL to tune then
expecting LTFTs to be 0% to -5% or steady at all.
The bottom link in my sig has an alternative.

[stevedarman]

All the read ups sugest to use autove and automaf. Is autove and automaf for open loop only? The tutorial finishes off back in closed loop. For closed loop operation is LTFT tuning the better option? or are the LTFT readings i am getting ok? I didnt think so.

[mr.prick]

LTFTs (average between both banks) should be 0%, -5% max.
If LTFTs are positive before WOT extra fuel is added and
AFR will be off from what it should be.

The AutoVE turdtorial is for tuning in OL then you enable LTFTs and
they should be 0% to -5% but they will not be.
Despite what most people say you can tune with LTFTs and WBO2.

My "write up" may not be complete but if you follow it LTFTs will be where they should be and that will help get WOT AFR right.
It will also allow you to keep PE on instead of relying on {B3605} solely for fueling.
You can leave PE on in OL but it will do no good.
All I can say is try it for yourself.

[stevedarman]

So your saying for me to tune for closed loop street driving, Tuning with LTFT may be a better option

[mr.prick]

I have found it to be better.

[stevedarman]

Ok can you tell me what is the reason the autove is put back into closed loop when it doesnt work as well with LTFT?
In my pid selection i cant find CAL.LTF.BEN pid can you show me where to find it?
Can i log LTFT with NB02 and use WBo2 for WOT?

[waterbug1999]

Ok can you tell me what is the reason the autove is put back into closed loop when it doesnt work as well with LTFT?
In my pid selection i cant find CAL.LTF.BEN pid can you show me where to find it?
Can i log LTFT with NB02 and use WBo2 for WOT?

Put this in your user config file.

http://forum.efilive.com/attachment.php?attachmentid=5899&d=1248402890

Post #32 if this link dont work.

http://forum.efilive.com/showthread.php?t=11423&page=4

[stevedarman]

I down loaded the file to where it says but still doesnt show in pid selection

[mr.prick]

Do you know how to format the calc.pid.txt?
If you do not have any calc.pids you can overwrite the original.
Download the file and save as:
C:\My Documents\EFILive\V7.5\User Configuration\calc_pids.txt

[stevedarman]

good i have it working now
what are the pros and cons of using MAF?

[mr.prick]

You should tune the VE then the MAF, this method works for the MAF too,
although you may need to raise the MAF table by xx% to avoid being lean.

[stevedarman]

Sorry my question was weather or not to use the maf
What are the advantages and disadvantages of using the maf

[mr.prick]

At all period?
Depends on your mods.
If yo don't max it why not use it?

[stevedarman]

I ask the question because, I have noticed the car is more responsive with mafless even after aufomaf
I also find the auto seems soft in the gear change with mafless
How can i fix this?

[waterbug1999]

Sounds like me a few months ago, eh Mr. P? LOL

[stevedarman]

I would like to go with SD but auto has soft gear change Did you solve your auto problem?

[waterbug1999]

I would like to go with SD but auto has soft gear change Did you solve your auto problem?

Yea, a Stage V FLT trans....


You do anything to your trans if its soft?

[mr.prick]

Shifting harsh/soft with Speed Density (LS1 PCM)...? (http://forum.efilive.com/showthread.php?t=10773) :secret: