He monkied with the settings...
What he said..haha.
Research speed density tuning with LTFT (Long term fuel trim)...
Basically choosing your cam (1-4) assigns a corresponding airflow that has been predetermined by FITech. This is like horse shoes and hand grenades here, close enough gets you there, because it is always running in closed loop and adjusting your fueling. You can monitor the corrections it is applying by the fuel trim, then once a fuel trim has been consistently applied in on area, it turns into a fuel learn.
This works fine, but when you happen to find yourself in an area where you haven't learned yet, you risk maxing out your fuel trim and suffering from a moment of poor drive ability.
Like I said, the VE surface assigned to the cam gets you close, but FITech has never had my engine on the dyno, so they don't know what my particular combo needs. Looking at where it was pulling a lot of fuel (100% fuel learn is no change, 70% is pulling 30% fuel from baseline), I looked at the VE surfaces for all the cams (1-4), and none seemed to fit the bill, so I multiplied the VE surface I was using, by the % the fuel learn had adapted to. So if I was pulling 30% fueling through fuel learn, I lowered the VE by 30% in that corresponding cell, so now my fuel trims should be close to 0%. I then had to smooth the areas out where I had not learned yet, si I wouldn't have any drastic transitions.
Is any of this needed, no...but being that I don;t have a carb anymore, I need to mess with something!
For the attached images, Blue means it is pulling fuel (upwards of 40%), red is adding fuel, and the target is orange. Basically a before and after of the fuel learn values. The blue region turned into a blue/green/yellow region. I am sure this process will take a couple iterations to get good, and I took a conservative first step, but ideally I'd like learn values within a couple % and trim values as close to 0 as possible.
OEMs generally run engines on a steady state dyno for hundreds of hours to generate these results, and while I don't have that luxury, or desire, I should be able to get it pretty close...