So, I have heard (on this forum) that Alex Davy at EU Nationals said that Dash and Outrider do work together. Apparently Dash's abilitiy ignores the effects of obstacles, but he still can overlap or move through obstacles. I think that makes sense, it his ship afterall.
But I think you can make an argument in the current RAW as well that Dash and Outrider work:
Page 13:
"A ship moves through an object if the template is placed on that object when the ship moves."
There is no reference to if you suffer effects or not. Simply, if your template is laid down on an object, you have moved through it. Dash, again, ignores the effects, but his template was still placed over the object/obstacle when he moved. Regardless of whether or not he ignores it, his template still went over it. And the template going over an object is what determines moving through.
Page 14:
"While a ship executes a maneuver or otherwise moves, it overlaps an object if the ship's final position would physically be on top of an object."
So again, overlapping is determined by your ship's physical position, and has nothing to do if you suffer effects of the obstacle or not. So Dash ignores the obstacle, sure, but his final position still was physically on top of the object.
Edited by HanScottFirst