the bit that you wrote that it does not see the TPS and MAP sensors disconnected is worrying, it should immediately set its check light when either is disconnected and the engine is running. ECU repaired by some genius before? Honda EFI wiring is quite simple, and if you peel back the looming you will see the wiring colours and damages if any, They usually are damaged from the TPS and map sensor outputs because CNG guys put their advancers right on these wires.
For the injectors - check their part nos. which is stamped on them and compare to your old ones. - and check their resistance too.