Can you show the close up pics where CNG injection pipes enter the intake manifold. How the nozzels are attached to the intake manifold, Further why dont you use a gas filter between regulartor and injector rail as the injectors are very sensitive and prone to clogging by minute particles/impurities in the gas?
Secondly is the petrol injector wires and ignition control wires from original ECU are cut and looped toCNG controller box or not? What is the safety mechanism to save the original ECU in case of Gas box malfunction??