LHS help from a Chryco tech....

What I'd like to know is what does commanding an injector kill test have to do with smoothing the idle? I get a marked difference on cyls killing injectors, but with all 6 on, the idle goes butt smooth, no putter/miss.
If it goes open loop when the kill test is commanded, then something under computer control is causing or aggravating the problem.

Back to the EGR possibility? I assume this setup uses an EGR position sensor?



No lifter noise BTW, and engine is very clean inside. The oil's never been dark. IMO, if it ain't clear as when it came outta the jug it needs changing.