ok i have a 94 coupe gsr swap been doing fine really good has a cheaped ecu and the other day started running rough like it wasnt gettin spark so i checked the cells it show o2 sensor witch i know is bad and the number 16 witch is the injectors so i checked them all change out some with extras i had from my last swap and no change so i got tired off it and went back at it today same codes to start with so i changed the ecu with my spare the light just stays on with it car still cranks but still the samer rough idle put my other one back in and the light is now staying on it also what could be some thing i need to check and why would the light just stay on

 

ok know it is showing the code or cel 16 again so i checked them agian the only way i know how i have a extra injector pulled off all the injector wires plugged it up to the loss one and it has power on all so i put them all back on crank the car pull them off one by one and they all make the car want to cut off except the number one injector when i pull it off no change so i try diff injectors there no change still running bad what could it be.

 

Check for an open in the fuel injector #1 ground wire that runs from the injector to the ECU.

 

would that be the case if i put a injector in my hand and plug it up and it is clicking that should mean it is getting power correct and thanks for answering me

 

I don't understand this^ test. Please give more details.

 

ok diffrent test got as led light and tested the connectors for the injectors they all work so then i checked the power wires for the injectors and they all have 12.6 volts car still acts like its skipping or flooding cel code still 16 and also 41 o2 sensor how bad will that effect how the car runs

 

Are you saying all four injectors test good using a node tester? You need to write more clearly so that your posts are understandable.

 

Maybe the problem is in the wrong map preloaded on a computer. I had, once at each error number 16 when editing the map in Crome forgot to disable injector test circuit. The engine ignite normally but cut off the ignition at 3500 rpm. Maybe there is something in your map more mess.
I have the a similar engine as you are - b18c4. I do not know if b18c1 but b18c4 does not have a injectors test circuit.