Can the 2 injectors be adjusted separately?
Each adds mix to all cylinders, but the intakes are grouped differently: left FI serves 1-2 and 3, right FI serves 4 and 5-6, but the exhaust grouping separates 1-2-3 and 4-5-6 completely. Reading each manifold will give you data from all cylinders because of the plenum.
How will it do cylinder to cylinder distribution?