Powerjection III Technical Help

[Broadwaydan]

I am working with a mechanic doing some tuning on my Mark IV. Engine has Powerjection III throttle body FI. Engine built in 2011. Tried to get help from Professional Products but no go. Discontinued system a few years ago so no help. Was hoping someone on the forum has some experience with it and would be willing to help out. You can respond here or send a private message. Thanks and happy building and driving.

Dan

[first time builder]

Unfortunatly I had trouble with mine and took it off. I had a tuner try to sort it out and that didn't help. Seems like wasn't getting enough fuel. I even had the 4 injectors cleaned and balanced professionally. Looking back now I found out that you need two different fuel filters and one of mine could have been dirty. Good luck.
Kenny

[John4337]

Best of luck, mine ran ok, but never great. My ECU died a while back and there are no parts available, so I switched to a FiTech. There used to be a web forum for it, perhaps that is still up with some archive info that may help. Hope you get it sorted.

[Joe Campbell]

Best advice is to put it in a pillowcase and smack whoever sold it to you, or load it into a trebuchet and fling it a couple of counties over. Had the opposite problem as first time builder, too much fuel to the point it washed down cylinder walls and kept motor from breaking in properly. Ended up having to rehone and try again. Never heard of anyone getting that system to run well.