ok so i just bought this 91 sedan with a DOHC ZC swap converted to obd1. the #3 injector wasnt working and i got some b20 injectors and clips in the garage...my question is the wires are backwards on the obd2 and obd1 so do i go color for color or do i swap (i.e. like red to yellow and yellow to red?)

 

to tell the truth, you dont need to match the wires. they work either way haha. and OBD1 and OBD2 are pretty much the same, just different clips. So yes, you can do that.

 

why works both ways? i put them on and it still smokes...

 

Injectors are just coils of wire that create a magnetic field when electricity is run through them. It doesn't matter the direction the current flows through them as the magnetic field doesn't change. It's still created and it still pulls the pintel needle and allows fuel to flow. So it doesn't matter which wire goes to which. I would just match up the wire colors so it looks nice. You won't hurt a thing. And yes OBD1 and OBD2 are practically the same. It's the OBD0 injectors that are different.

You may have two problems. what color smoke are you getting? black, blue, white, or grayish? And where is it coming from, tail pipe, under hood, under the car, etc.

 

its black out the tail pipe...but it runs like a champ

 

exactly. As for your smoking black, your running rich, or you have a bad tune. Black smoke means your burning fuel.

 

thanks guys. I put a can of seafoam in the tank at chevron and filled her up with supreme, I'm gonna change the oil and fuel filter in a few. if she's still smokin tomorow ima try a stock ls ecu.

 

Lets hope for the best.