I have 2006 6.0 Stage 2 injectors from industrial injection, 88mm power max turbo, head bolts, egr delete, air dog II, ITP/Sinister Diesel 6.0L Regulated Return Kit, 65 psi, 4" straight pipes, sct custom program, and intake.
I have replaced: icp, camshaft sensor,
The truck starts and idles fine. Going down the road the truck "trailer hitches" (surges) intermittently. Some days I have no problems at all and other days it does it so bad it jerks you around. At 1250 rpm (in neutral) the truck runs ruff and when I shout down #7 the rpm does not change. I compared this with all other cylinders the rpm drops and runs worse. At 2000 rpm when I turn #7 off I get about a 250 rpm drop and all other cylinders I get about a 500 rpm drop. When the truck is cold #7 seams to be working properly
. I thought I had a injector problem. So I sent #7 injector back to industrial. Industrial tested it and said it performs to there spec at an idle all the way to wide open.
FICM has 48 volts, tested wires from FICM to the injectors got 0 ohms,
I am about to the point of taking it to the dealer. Have any ideas.