Hi everyone, I've been learning to tune my 09 corvette LS3. I got the MAF dialed in, and I'm working on the VVE. I'm using ltft+stft for part throttle, and a WB for PE. After 2 attempts my fuel trims are for the most part looking pretty good, but I've created some peaks and valleys in the VVE table. And the fuel trims that are still off a bit are telling me to make the peaks a little higher and the valleys a little lower. I also noticed that the ridges coincide with zone edges.
So I guess my question is, should I carry on with what I've been doing and just look at the resulting fuel trims, or should I be more concerned about the smoothness of my graph? Here's my most recent tune and log. Thanks
It wouldn't let me attach my log, so here's a screen shot of the fuel trims
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Originally Posted by Hubes
As long as you don't have a cam download Cringer's latest VVE assistant and use the trims and wideband both combined for everything. This is also granted you're using a good wideband and it's reading correctly. I just did this to a customers procharged car and basically averaged together 6 different tables into one for fuel corrections. I think Cringer's tool is up to something like version 1.7 now with some nice updates worked into it. I don't know if you had a manual or not, but if you do go find a city and drive in some stop and go traffic for about 30 or so minutes. That'll get you some good data.
