https://github.com/denoflionsx/DenPipes/wiki/TransportPipes
I don't quite get the point, since I'm pretty sure the autarchic gate's normal extract mode is faster than the redstone engine rate, and it sounds like you still need one on the pipe. Maybe if you want to limit the extract speed?
The recipe is outdated, it's the same pipe. The point is that it has the redstone engine built in. So you get full power of a redstone engine right away and it doesn't take up any extra space. Not that useful when you consider that you need a gate to get that working.