black / yellow are power. The others are grounded by the ECU when it wants to fire injector.



Did you have this ECU on the car before? Will it work on someone elses car?

the CAS is directly involved.



CAS tells the ecu when to fire spark and inject fuel, if CAS is fucked you will get neither one... as the ECU won't know the engine is turning.

well...the **********er finally started! https://www.nopistons.com/forums/pub...#>/biggrin.png we tried to ground the injectors manually, and ended up flooding it, but when we tied the grounds together, it will consistently fire right up!

Fires every time. Haven't had a chance to let the PFC do any adjusting, as I have to keep adding coolant.. But it's almost full. GOOD GOD this thing is LOUD. Can't do too much more of this as I'm pissing off half the midwest... LMFAO



Video is SOON to come. Thanks Zach and Amel for keeping me from setting it on fire. https://www.nopistons.com/forums/pub...#>/biggrin.png https://www.nopistons.com/forums/pub...#>/biggrin.png https://www.nopistons.com/forums/pub...#>/biggrin.png

Aight, i got the movie downloaded and edited....who wants to host a 8mb file?? https://www.nopistons.com/forums/pub...>/bigthumb.gif

Can you draw us a wiring diagram? I'm not picturing this.



Well what I am picturing doesn't make a lot of sense to me!



You've got battery voltage coming in from the black / yellow wires, and the coloured wires are running to the ECU. How are these new grounds connected in a way that the ECU manages?

ok, we T'ed into the coloured wires and tied them 2gether. They still run to the ECU, but are basically one in the same. We tested the front injector clip, and there was no ground, and so no fuel. Grounded both to the UIM manually and it flooded bad....Put them 2gether and we got the fuel in and a perfect start every time!

Pretty much what Zach said... tapped the 2 primary injector grounds together and wham! Fired right up.. I don't get it at all..



I really need to look it over, but it works.. lol



I *MIGHT* try to yank the connection and see if it still works.. like it might be a fluke or something..

so where is the video? What else did you guys do after I left? :(

I think if you do that you've got both injectors opening off whichever injector driver is working. With the injectors wired in parallel like that it might not last very long. The impedance will be pretty low. https://www.nopistons.com/forums/pub...1047683561.gif



The ground won't be there all the time, only when the injector is supposed to fire.



If you know someone with an oscilliscope they can test each one.



When you grounded it to the manifold that's exactly what should happen, so if they all do that the injectors must be good. https://www.nopistons.com/forums/pub...IR#>/smile.png