I have been trying to dial in the maf as I made some modifications to my car. I am using lambda error with my wideband to do it. I log, copy, paste, etc, etc following the methods discussed here on the forums.
My question is this... I do logs for abought 5 -7 minutes covering rpms up to 4000, and then paste the percent error. I now have it to the point where I am under 2% average in all the maf cells. Whats bugging me is that although I am satisifed with that average error, when I watch the log it runs from about 10% lean to 10% rich in various places.
Should i ignore this and just be satisfied with the average of a 5 - 7 minute drive, or should it be a tighter range throughout ? I notice that when i do a copy/paste and then start to log again, it idles rich on startup for the first minute or 2 and then idles right on commanded from then on. Normal ??
Thanks for any advice. This is bugging me but maybe its the norm.