Quote:
Originally Posted by 4x4le
yes I know this and my tuning editor (nistune) does this pretty well. I get the k value set to where the cells at idle read 14.7 and it idles at 14.7 but thats as far as I adjust the k value. I dont care if Im hitting the targets exactly later on in the map because there are other variables such as this system that will effect the targets and actual afr's.
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If your k-value is set such that you get the correct AFR at idle, but not in boost, then your injector lag time is incorrect.
Do everything right where your fuel map is actually a target AFR map and it makes tuning very easy. Just fiddling with crap and getting it where it "kinda hits the right AFR here and there" is pointless when you have a nice MAF system that will give you your target AFRs anywhere you go in the map. The factory does that same crap where the AFR is all over the place and it looks like they just point tuned a few places resulting in a really lumpy fuel map and thus fuel delivery. Don't even get me started on their horrible timing maps...