View Full Version : E38 fuel trims
minytrker
August 31st, 2009, 02:57 PM
Whats the eaisest way to log fuel trims agaisnt the maf when running maf only?
I lost my laptop and had to startover so I dont have any of my maps anymore.
ringram
September 1st, 2009, 08:35 PM
just disable ltft and make a custom pid to average the 2 stft's and map it against maf hz
The calc_pids.txt has some info in it.
something like (100-((stft1+stft2)/2))/100
Will turn it into a BEN factor.
minytrker
September 2nd, 2009, 06:53 PM
thanks I will try that this weekend
minytrker
September 5th, 2009, 05:26 AM
just disable ltft and make a custom pid to average the 2 stft's and map it against maf hz
The calc_pids.txt has some info in it.
something like (100-((stft1+stft2)/2))/100
Will turn it into a BEN factor.
I dont have or cant find calc_pids.txt on my laptop??
alian
September 5th, 2009, 05:19 PM
I dont have or cant find calc_pids.txt on my laptop??
pm sent.
cheers Ian
alian
September 9th, 2009, 10:02 PM
pm sent.
cheers Ian
How did that go????
mr.prick
September 10th, 2009, 03:01 AM
BEN from STFT
A way to cheat and fix your strims/ltrims using Rtac Very quickly. (http://forum.efilive.com/showthread.php?t=6318)
minytrker
September 10th, 2009, 04:18 AM
How did that go????
It worked great. Thanks for the help.
alian
September 10th, 2009, 05:13 PM
It worked great. Thanks for the help.
Glad to help.:grin:
GAMEOVER
June 30th, 2010, 04:54 PM
Sorry to bring this back...I'm running MAF only and put my truck back to CL but one day the STrims will be perfect the next they are all over the place....I'm about to give up on CL and go back to OL.....Any ideas?
GAMEOVER
June 30th, 2010, 04:55 PM
Could it just be the weather screwing with me?.....:shock:
swingtan
June 30th, 2010, 07:32 PM
Do the trims follow IAT? Perhaps the IAT Injector tables need looking into?
post a log ;)
GAMEOVER
June 30th, 2010, 08:05 PM
I think thats why I'm chasing my tail because while in OL-MAF I did adjust B1213 like in your tutorial but I figured since I was gonna try CL-MAF only, i would put everthing back to CL, I should've never returned B1213 back to stock...:doh2:....Going to change B1213 to the values while I was in OL and do some more logs...Will post up tomorrow
It's getting pretty HOT & Humid now.......115 degrees & 45% humidity...and summer just started...:shock:
swingtan
June 30th, 2010, 08:31 PM
It's probably that, keep an eye on the logs to see if it's likely.
GAMEOVER
July 2nd, 2010, 02:42 PM
I found out that my Intake Tube, was cracked where the vacuum line(protruding nipple on intake tube) is connected to Valve cover...
There was a big leak after the MAF. No wonder STFT were all over the place...:shock:
New tube is ordered, I kinda half-ass fixed current one till new one arrives.
BEN's are where they should be now!!!...:D Truck drives like a champ in CL MAF only. First time messing with E38 in CL...:good:
B1213 was returned to where it was while I was in OL...
swingtan
July 2nd, 2010, 02:44 PM
Good work. I found CL-MAF worked very well, but then decided to try psuedo lean cruise. So now I'm running OL-MAF and 15.5:1 at light throttle, at least I would be if the car wasn't still in the panel shop :p
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