What I have found is that a lotta EFI cars do not have linear opening TBs. That is to say, the first 50% of the pedal travel actually opens the TB closer to or something like 70%. So the last 30% is only a small cfm change.
I think they do this to make those little tiny engines feel bigger than they really are, in the lowest gear or two. I had an 07Honda Pilot 3.5liter heavy Cross-over SUV like that. To take off, I always had to ride the brake and feather it out, else my wife complained about my jack-rabbit starts. I was not sad when I hit a deer last month and wrote it off. I've has several EFI SUVs like that.
