I'm copying that post. I get so sick and tired of trying to explain to rubes on the FB groups I admin that "EGR not bad. EGR good. Harrumph". All the rubes are out there chanting in unison, "Its smog stuff..get rid of it".
In general agree, but not big fan of a 5.0 HO EGR plate (@ throttle body) and the PCV, TB to pass side valve cover tube, combo.
Even my bone stock 86 5.0 Capri ( I bought new and still own), had a nice carbon/oil combo
on the TB and intake, not that long after first getting it.
Theoretically, that TB to valve cover tube should be flowing to valve cover, but it seemed to flow the other way
@ full throttle at times, maybe creating a vac across that tube, with all the airflow rushing by.