User blog comment:Arbington/The Next Cycle/@comment-2094653-20120803225240/@comment-899316-20120804090256

Reverse engineering the Citadel Relay could alert the Reapers. As for the drive core problem, I don't really see what they could do. All of that energy has to go somewhere. Also, we don't know that the Reapers are just outside of Batarian space. That was the closest point to their location, but they could've been traveling extremely fast. And, seeing as Dark Space is an infinite expanse of nothingness, I think there is actually zero chance of finding them.