I have a lean hump that I can’t seem to remove out of my 4.3L Sonoma tune. You can see the hump in the log file at frame 770. Under part throttle the fuel jumps from 14.5 to 16.6. Both the MAP and VE table look smooth. I have also tried to turn PE off, but the hump stays. The truck has a Marine intake manifold, larger injectors, exhaust and intake. The truck runs smooth and strong except for the lean hump where it falls on its face. Any ideas?