[mmceorange]

^^ OK - makes sense. The downside is it ** appears ** this mode **may** increase the actual volume of recirculated gases. The outlet of my 06 EGR is maybe 1/4" hole. If I hack that off, its easily 6X larger than it was. I am assuming that tiny hole at the end is to limit flow but could be mistaken and this it done elsewhere in the valve.

WOULD LOVE to see the TRIMS on a 6s with this mod done!

It is probable that the thickness between the O/D and I/D that you see is mostly carbon buildup. thegreatNY put up pictures somewhere of his before & after complete cleaning, and it really opened that tube up.