Quote:
Originally Posted by Unashamed_Nerd
Firstly let me thank you all for the great information it has been a great guide while I work to getting my MAF scaling down to the gnats ass. I have made progress on my CL MAF scaling to the point where LTFT sits right at zero while at a cruise. I still see my LTFT up above 8% either while I am at fuel status 4 or while at idle. The OL LTFT is not my primary worry as I have yet to start data logging for that, I am more concerned about it being that high during engine idle. Is a LTFT above 8% normal during idle or is this something I should be concerned about (i.e. Vacuum Leak)? Posting a link to my last data log:
http://www.datazap.me/u/unashamedner...=0&data=1-9-13 |
At idle their are large changes in intake air temps, this tends to make the ltft at idle and low rpm move arroind a bit more than the lftf higher in the flow bands.
dont worry too much about the ltft at idle, its nice if you can get it below 5 but not rearly necessary anything belpw about 10 is fine at idle unless your hetting hesitation or something.
Get e higher flow ltft low especially arroind 60g\s which is about 3.2 v this is the last flow band and determines the ltft correction to the ol maf scaling above 3.2 v.
Try to get that idle ltft low at the average temps in your area for me thats about iat 25C, its going to vary a bit if your iat get to -50c or 0c.
sometimes you have to just manually adjist the scale at the idle rpm flow rates jist try to keep the cureve smooth
if its +8% at 2g\s say then add say 8% to that cell and mabe 4% to adjacent cells