High EGT......HELP!!!!

[in2trux]

So how is the power running down the road? If you don't have a boost gauge on it,do it asap.
Part of your problem may be it never gets enough time on the road to regen properly.
As soon as you park and presumably set the idle up for PTO it might be triggering a parked regen, idle should jump to 1100 rpm.

The stop engine warning is what would bother me. If you always shut it down the system will look for the next opportunity.
You really need to get on Insite and see if you can duplicate the problem, see if it will complete a forced regen. (40 minutes)
Watch the DOC inlet temp,DPF in and out temp, turbo position, EG pressure, doser fuel psi open and closed.
Get a printout of your aftertreatment history and fault codes before you spend any more on it.

Pressure test of CAC and intake is the other part of the equation.
Most times is the combination of problems that make it hard to pinpoint.
At this point you've spent way too much on it for it to not be working prefectly.