Power FC Won't Fire Injector 3!!! HELP!!!!!

[nisileighty]

Hi there, I recently purchased a secondhand Apexi Power FC for my SR20DET red top. I was told when I bought it that it was tuned for 740cc's, and being that I have 550cc's, I had to take it to my local tune shop to get the injector size scaled down on my map so I could bring my car there. Now when I first bought the PFC, I was able to start the car and it would run for about 3-4 seconds before stumbling and dying. I got the map scaled down and now it runs, but now MY INJECTOR #3 WONT FIRE. I pulled the electrical plug from it while it was running with the PFC and the motor stayed the same. Nothing changed. I put my stock ECU back in and pulled the same plug and the car stumbled, almost died, and shook violently. So now I know it's not my injector thats the problem but the Power FC. I've searched the whole board, no burn marks at all. Either my tuner messed up and the cylinder 3 won't fire or my PFC is messed up. IM STUMPED. Please, if you have any input or ideas on why it's not firing, let me know! I need this thing driving again

[PapaSmurf2k3]

I guess you should see if its getting no fuel, not enough fuel, too much fuel, or no spark. If you pull the plug, is it wet?

[nisileighty]

I guess you should see if its getting no fuel, not enough fuel, too much fuel, or no spark. If you pull the plug, is it wet?

It's getting NO fuel at all. It gets spark. The plug isn't wet at all. I ordered a new PFC to see if thats the problem. Hopefully it works.