Freightliner M2 with Cummins ISC 8.3 uneven idle, won't rev.

[wrench buster]

Thanks much for your quick reply. I took your advice and pulled the OLD injector trim codes (from Insite) and input them back into the ECM, and BINGO I could tell just by the way the engine started that was it. I didn't think of doing that early on because the ECM ACCEPTED the New trim codes from the aftermarket injectors And they all passed the pressure and return flow tests. The strange part is EVEN the 2 Cummins remans I had installed on #1 and 2 Cyls. were screwed up and not firing off correctly. To sum it up the engine was misfiring on ALL cyls at all rpm's. When I did the Cyl cancel test on Insite there was only min (150-200 rpm loss on each cyl) and not even the #1 & 2 cyls with Cummins injectors were hitting strong (I figured they would). I don't know if it was 1 or all of the aftermarket injectors that are still installed are the problem. I could enter the trim codes on each cyl (one at a time) and then start the engine to find out. I am just going tom let that ride for now and see what happens. The motor runs strong why fix it? Even though the Cummins remans were almost double the price as internet injectors now I can see why.

Thanks so much